Urban drainage pipeline inspection well

Abstract

The invention relates to the technical field of inspection wells, and discloses an urban drainage pipeline inspection well which comprises an inspection well body and a drainage pipe, the drainage pipe communicates with the side portion of the lower end of the inspection well body, and an upper end opening of the inspection well body is covered with a well lid; the outer wall of the inspection well is wrapped with a protective cover, a collecting disc capable of axially moving is arranged at the lower end of an inner cavity of the inspection well, and the upper end of the collecting disc is connected with a winding mechanism located in a gap between the inspection well and the protective cover through slings evenly distributed in the circumferential direction. The winding mechanism drives the sling to drive the collecting disc to axially move to ascend and descend, when sediment is accumulated to a certain amount, the motor drives one of the second bevel gears to rotate, so that the first bevel gear and the other second bevel gears are driven to synchronously rotate, the multiple wire spools synchronously wind the sling, the collecting disc is stably lifted to a well opening, and the sediment is collected. The single cleaning time can be effectively shortened, so that the cleaning efficiency is improved, personnel do not need to go down a well, and potential safety hazards such as poisoning and oxygen deficit are eliminated.

Description

Technical Field

[0001] This invention relates to the field of inspection well technology, specifically to an inspection well for urban drainage pipelines. Background Technology

[0002] With rapid urbanization and expanding urban areas, the burden on urban drainage systems is becoming increasingly severe. During pipeline operation, a large amount of sediment rapidly accumulates at inspection manholes. If not cleaned promptly, this sediment buildup can easily cause pipe blockages, and in severe cases, even urban flooding, disrupting residents' lives. Traditional manhole cleaning methods rely primarily on manual labor, which is not only inefficient but also poses safety hazards. To address this problem, this invention proposes a novel solution: an urban drainage pipeline inspection manhole system that integrates multi-source data. This solution utilizes intelligent technology to achieve real-time monitoring and automatic cleaning of sediment within the inspection manholes, effectively improving the operational efficiency and safety of urban drainage systems. Summary of the Invention

[0003] To address the technical problems existing in the background art, the present invention proposes an inspection well for urban drainage pipelines.

[0004] The present invention proposes an inspection well for urban drainage pipes, comprising an inspection well and a drainage pipe, wherein the drainage pipe is connected to the lower side of the inspection well, and the upper opening of the inspection well is covered by a manhole cover. The outer wall of the inspection well is covered with a protective cover. The lower end of the inner cavity of the inspection well is equipped with an axially movable collection tray. The upper end of the collection tray is connected to a winding mechanism located in the gap between the inspection well and the protective cover through circumferentially distributed slings. The winding mechanism drives multiple slings to move the collection tray up and down smoothly. The upper end of the inspection well is equipped with a camera for monitoring the amount of sediment accumulated in the collection tray. The camera is connected to the output end of a telescopic mechanism installed inside the upper end of the protective cover. The input end of the telescopic mechanism is driven by a winding mechanism. The winding mechanism drives the collection tray to rise and fall, thereby causing the camera to retract or extend synchronously. To address the issues of low efficiency and significant safety hazards associated with traditional manual cleaning of inspection wells, this design achieves automated cleaning through the linkage of a retracting mechanism and a telescopic mechanism. The retracting mechanism uses a sling to lift the collection tray from the bottom of the inspection well to the wellhead, enabling automatic retrieval of sediment within the tray without requiring personnel to enter the well, thus eliminating risks such as hydrogen sulfide poisoning and oxygen deficiency. Furthermore, a camera monitors the sediment volume in real time, and when the accumulated amount reaches a threshold, such as 80% of the collection tray's capacity, the retracting mechanism is automatically triggered, achieving a closed-loop control of "monitoring-cleaning," which significantly improves efficiency compared to traditional manual inspections.

[0005] As a further optimized solution of the present invention, the winding mechanism includes a first bevel gear and a second bevel gear. The first bevel gear is rotatably mounted on the outer periphery of the inspection well. The second bevel gear is rotatably mounted on the inner wall of the protective cover via a rotating shaft and meshes with the first bevel gear. There are multiple second bevel gears, each corresponding to a multiple slings. A winding reel is installed on the rotating shaft of each second bevel gear. The end of the sling away from the collecting reel extends upward and passes through to the upper outside of the inspection well and is wound on the winding reel. The rotating shaft of one of the second bevel gears is connected to the input end of the telescopic mechanism via a transmission assembly and is driven by a motor. The design of the bevel gear set ensures that multiple winding reels are wound synchronously, guaranteeing synchronized lifting and lowering of the sling and preventing the collection reel from tilting and jamming.

[0006] As a further optimization of the present invention, the transmission assembly includes a first pulley and a second pulley respectively installed at the end of the second bevel gear shaft and the input end of the telescopic mechanism. The diameter of the first pulley is smaller than the diameter of the second pulley, and the first pulley and the second pulley are connected by belt drive. The outer wall of the protective cover is fitted with a protective shell that covers the motor, the first pulley, the second pulley, and the belt. The belt drive ensures that the lifting speed of the collection tray is greater than the moving speed of the telescopic mechanism, so that the camera can retract smoothly when the collection tray moves up to near the wellhead, making room for subsequent cleaning of sediment. The protective shell has an IP65 protection rating, which can withstand the impact of heavy rain and improve the life of the internal transmission components.

[0007] As a further optimization of the present invention, the upper end of the inspection well is provided with multiple circumferentially distributed through holes, and each through hole corresponds to a multiple lifting cable. A guide component is installed inside the through hole. One end of the lifting cable is fixed to the upper end of the collection tray through a lifting ring, and the other end of the lifting cable extends upward and passes through the through hole and is transmitted downward through the guide component to be wound and connected to the corresponding winding disc. Four through holes are evenly distributed around the circumference and correspond to four lifting cables. The guide assembly ensures that there is a certain distance between the lifting cable and the inner wall of the inspection well to avoid friction and wear, and the lifting ring improves the connection strength.

[0008] As a further optimized solution of the present invention, the guide assembly includes a bracket, a guide wheel and a fixed seat. The guide wheel is rotatably mounted on the upper end of the bracket for guiding the sling. The fixed seat is mounted on the bottom surface of the through hole and is rotatably connected to the lower end of the bracket and the deflection angle is stabilized by a torsion spring. The guide wheel is chrome-plated, resulting in a low coefficient of friction and reducing the resistance of the lifting cable. The torsion spring causes the support to automatically reset. When the collection tray rises to the through hole, the support is squeezed and deflected outward at a certain angle to ensure that the collection tray passes smoothly.

[0009] As a further optimization of the present invention, the upper end of the bracket has two symmetrically distributed guide ends, and both guide ends are rotatably mounted with guide wheels, the outer peripheries of the two guide wheels extending to the inner and outer sides of the inspection well respectively. The dual guide wheel design allows the sling to smoothly turn inside and outside the inspection well, avoiding sling wear caused by sharp turns.

[0010] As a further optimization of the present invention, the protective cover is a cover that matches the external shape of the inspection well, and the upper end surface of the protective cover is higher than the upper end surface of the inspection well. The center of the protective cover has a well opening that is aligned with and adapted to the upper opening of the inspection well, and the side wall of the well opening is provided with an opening for the extension and retraction of the camera and the telescopic mechanism. The protective cover extends 200mm above the top of the inspection well to prevent rainwater from flowing back into the road surface. The opening is 150mm wide, and the camera has a telescopic range of 300mm to ensure that the collection tray can be monitored throughout its entire range.

[0011] As a further optimized solution of the present invention, the telescopic mechanism includes a threaded rod, a threaded sleeve, and a guide slider. One end of the threaded rod has an optical shaft section and is rotatably connected to the upper end of the protective cover and is in transmission cooperation with the winding mechanism. The other end of the threaded rod is threadedly sleeved with one end of the threaded sleeve. The other end of the threaded sleeve passes horizontally through the opening and extends to the top of the inspection well and is equipped with a camera. The guide slider is installed on the upper part of the threaded sleeve near the threaded rod, and the guide slider is slidably assembled with the upper top wall of the protective cover. The threaded rod is driven to rotate by the winding mechanism, which enables the threaded sleeve to move the guide slider horizontally. This, in turn, causes the threaded sleeve to extend and retract the camera horizontally, and the movement speed matches the lifting speed of the collection tray.

[0012] As a further optimization of the present invention, the upper top wall of the protective cover is provided with a guide groove that is consistent with and compatible with the movement path of the guide slider, and the upper end of the guide slider extends into the guide groove and is slidably assembled with the guide groove. The guide slider slides smoothly in the guide groove without any jamming, ensuring that the camera moves synchronously with the collection tray.

[0013] As a further optimization of the present invention, the external size of the camera is smaller than the internal size of the opening, and the camera is connected to the display device via wired or wireless means to display a monitoring screen of the amount of sediment accumulation. The camera has 10,000 pixels and is equipped with infrared night vision, enabling clear imaging under 0.1 lux light. The data transmission delay is ≤0.5s. Maintenance personnel can remotely view the sedimentation status of multiple inspection wells through a mobile APP, realizing intelligent operation and maintenance.

[0014] The urban drainage pipeline inspection well proposed in this invention has the following beneficial effects: (i) The sling driven by the winding mechanism can drive the collection tray to move axially and rise and fall. When the sediment accumulates to a certain amount, the motor drives one of the second bevel gears to rotate, thereby driving the first bevel gear and the other second bevel gears to rotate synchronously. Multiple winding reels simultaneously wind up the sling, and the collection tray is smoothly lifted to the wellhead. This can effectively shorten the cleaning time of a single cleaning, thereby improving the cleaning efficiency. Moreover, no personnel need to go down into the well, eliminating safety hazards such as poisoning and lack of oxygen. (ii) The camera monitors the accumulated amount of sediment in the collection tray in real time. The telescopic mechanism is driven by the threaded rod and threaded sleeve, and extends and retracts synchronously with the rise and fall of the collection tray. When the monitored sediment amount reaches the threshold, the winding mechanism is automatically triggered to realize the closed-loop control of "monitoring-early warning-cleaning". The monitoring data is transmitted to the monitoring terminal in real time, so that maintenance personnel can remotely grasp the sediment status of multiple inspection wells, thereby improving the inspection efficiency. (iii) The guide wheel of the guide assembly cooperates with the bracket to ensure smooth lifting of the sling. The protective cover is higher than the upper end of the inspection well to prevent rainwater backflow. Its protective shell protects the transmission components, so that the equipment can still operate stably in harsh environments such as rainstorms and mud and sand, and reduce the failure rate.

[0015] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] Figure 1 This is a front cross-sectional view of the protective cover provided by the present invention. Figure 2 This is a front sectional view of the inspection well provided by the present invention. Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A; Figure 4 This is a schematic diagram of the telescopic mechanism provided by the present invention.

[0017] Figure descriptions: 1. Inspection well; 2. Drainage pipe; 3. Protective cover; 4. Well cover; 5. Collection tray; 6. Lifting ring; 7. Lifting rope; 8. Camera; 9. Telescopic mechanism; 91. Threaded rod; 92. Threaded sleeve; 93. Guide slider; 10. First bevel gear; 11. Second bevel gear; 12. Winding reel; 13. Motor; 14. First pulley; 15. Second pulley; 16. Belt; 17. Protective shell; 18. Through hole; 19. Bracket; 20. Guide wheel; 21. Fixing seat; 22. Opening; 23. Guide groove. Detailed Implementation

[0018] Embodiments of the present invention are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0019] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0020] In urban drainage systems, traditional manhole cleaning relies on manual labor, which is inefficient and poses significant safety hazards. The urban drainage pipeline manhole provided by this invention achieves automatic monitoring and cleaning of sediment, and its specific implementation method is as follows: like Figure 1 and Figure 2 As shown, the outer wall of the inspection well 1 is covered with a protective cover 3, the lower side is connected to the drain pipe 2, and the upper opening is covered by a well cover 4. A collection tray 5 is set at the lower end of the inner cavity of the inspection well 1. Its upper end is connected to the winding mechanism through circumferentially distributed slings 7. The winding mechanism is located in the gap between the inspection well 1 and the protective cover 3, and can drive the slings 7 to drive the collection tray 5 to rise and fall. A camera 8 is installed at the upper end of the inspection well 1, which is linked with the telescopic mechanism 9 inside the protective cover 3 to monitor the amount of sediment accumulated in the collection tray 5 in real time. When the sediment in the collection tray 5 reaches the threshold, such as 80% of the capacity, the motor 13 starts and drives one of the second bevel gears 11 to rotate. Through the meshing transmission between the first bevel gear 10 and the second bevel gear 11, multiple winding reels 12 synchronously wind up the sling 7. The sling 7 is guided by the guide component in the through hole 18 and smoothly lifts the collection tray 5 to the wellhead.

[0021] like Figure 4 As shown, the camera 8 is mounted on the threaded sleeve 92 of the telescopic mechanism 9 and extends and retracts synchronously with the rise and fall of the collection tray 5. When the collection tray 5 descends to the bottom of the well, the camera 8 extends into the inspection well 1 to monitor the amount of sediment in real time. When the collection tray 5 is raised, the threaded rod 91 drives the threaded sleeve 92 to retract into the protective cover 3 to avoid interfering with the removal of sediment in the collection tray 5. The camera 8 transmits data to the terminal via wired or wireless means to achieve remote monitoring.

[0022] Specifically, such as Figure 1As shown, the bevel gear set includes a first bevel gear 10 and four second bevel gears 11 meshing with it. The first bevel gear 10 is fitted around the outer periphery of the inspection well 1 and meshes with multiple second bevel gears 11 on the inner wall of the protective cover 3 to ensure that multiple winding discs 12 rotate synchronously and the lifting error of the sling 7 is ≤5mm.

[0023] Specifically, such as Figure 2 and Figure 3 As shown, the guide assembly includes a bracket 19, guide wheels 20 and a fixing seat 21. The bracket 19 is installed at the lower end of the through hole 18 through the fixing seat 21. The two guide wheels 20 at its upper end guide the slings 7 inside and outside the inspection well 1 respectively. The friction coefficient of the chrome-plated guide wheels 20 is ≤0.1, which reduces the wear of the slings 7.

[0024] Specifically, such as Figure 1 and Figure 2 As shown, the upper surface of the protective cover 3 is 1200mm higher than the inspection well to prevent rainwater from flowing back into the road surface. The protective shell 17 encloses the transmission components, with a protection level of IP65, which can withstand the impact of heavy rain.

[0025] In one embodiment, in a city drainage system renovation project, the inspection well reduced the cleaning time from 2 hours by traditional manual labor to 15 minutes, increasing efficiency by 8 times. At the same time, it eliminated the need for personnel to go down into the well, reduced the risk of hydrogen sulfide poisoning by 100%, and reduced the annual accident rate to 0. The 5-megapixel camera is equipped with infrared night vision, enabling clear imaging even in 0.1 lux light conditions. Data transmission latency is ≤0.5 seconds. Maintenance personnel can remotely monitor more than 100 inspection wells via a mobile app, improving inspection efficiency by 90%. The specific application process is as follows: S1 Initial Installation: Fix the protective cover 3 to the outer perimeter of the inspection well 1, adjust the angle of the guide component to ensure smooth lifting of the sling 7, then connect the camera 8 to the monitoring terminal and set the sedimentation alarm threshold, such as 80% of the collection tray capacity; S2 Automatic Monitoring and Cleaning: When the camera 8 detects that the amount of sediment has reached the threshold, the system automatically starts the motor 13, and the winding mechanism lifts the collection tray 5 to the wellhead. Maintenance personnel remove the sediment with special tools. During this process, the motor 13 drives the threaded rod 91 to rotate through the transmission component, so that the threaded sleeve 92 drives the camera to retract into the protective shell 17. S3 Remote Operation and Maintenance: Operation and maintenance personnel can view the sedimentation status of each inspection well through the terminal, remotely control the cleaning process, and synchronize the data to the urban drainage management platform to achieve intelligent scheduling.

[0026] In summary, this inspection well, through the innovative combination of mechanical transmission and intelligent monitoring, promotes the upgrading of urban drainage systems towards automation and intelligence, and provides a reliable solution to the problem of urban flooding.

[0027] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A manhole for urban drainage pipes, comprising a manhole (1) and a drainage pipe (2), wherein the drainage pipe (2) is connected to the lower side of the manhole (1), and the upper opening of the manhole (1) is covered by a manhole cover (4), characterized in that, The outer wall of the inspection well (1) is covered with a protective cover (3). The lower end of the inner cavity of the inspection well (1) is provided with an axially movable collection tray (5). The upper end of the collection tray (5) is connected to a winding mechanism located in the gap between the inspection well (1) and the protective cover (3) through circumferentially distributed slings (7). The winding mechanism drives multiple slings (7) to drive the collection tray (5) to rise and fall smoothly. The upper end of the inspection well (1) is equipped with a camera (8) for monitoring the amount of sediment accumulation in the collection tray (5), and the camera (8) is connected to the output end of the telescopic mechanism (9) installed inside the upper end of the protective cover (3). The input end of the telescopic mechanism (9) is driven by the winding mechanism. The camera (8) is synchronously contracted or extended by driving the collection tray (5) to rise and fall through the winding mechanism.

2. The urban drainage pipeline inspection well according to claim 1, characterized in that, The winding mechanism includes a first bevel gear (10) and a second bevel gear (11). The first bevel gear (10) is rotatably mounted on the outer periphery of the inspection well (1). The second bevel gear (11) is rotatably mounted on the inner wall of the protective cover (3) and meshes with the first bevel gear (10) via a rotating shaft. There are multiple second bevel gears (11) and they correspond one-to-one with multiple slings (7). Each second bevel gear (11) has a winding reel (12) mounted on its rotating shaft. The end of the sling (7) away from the collection tray (5) extends upward and passes through to the upper outside of the inspection well (1) and is wound on the winding reel (12). The rotating shaft of one of the second bevel gears (11) is connected to the input end of the telescopic mechanism (9) via a transmission assembly and is driven by a motor (13).

3. A manhole for urban drainage pipelines according to claim 2, characterized in that, The transmission assembly includes a first pulley (14) and a second pulley (15) respectively installed at the shaft end of the second bevel gear (11) and the input end of the telescopic mechanism (9). The diameter of the first pulley (14) is smaller than the diameter of the second pulley (15), and the first pulley (14) and the second pulley (15) are connected by a belt (16).

4. A manhole for urban drainage pipelines according to claim 2, characterized in that, The upper end of the inspection well (1) is provided with multiple circumferentially distributed through holes (18), and each of the multiple through holes (18) corresponds to a multiple slings (7). A guide component is installed inside the through hole (18). One end of the sling (7) is fixed to the upper end of the collection tray (5) through the lifting ring (6), and the other end of the sling (7) extends upward and passes through the through hole (18) and is transmitted downward through the guide component to be wound and connected to the corresponding winding reel (12).

5. A manhole for urban drainage pipelines according to claim 4, characterized in that, The guide assembly includes a bracket (19), a guide wheel (20), and a fixed seat (21). The guide wheel (20) is rotatably mounted on the upper end of the bracket (19) for guiding the sling (7). The fixed seat (21) is mounted on the bottom surface of the through hole (18) and rotatably connected to the lower end of the bracket (19) and stabilized by a torsion spring to maintain the deflection angle.

6. A manhole for urban drainage pipelines according to claim 5, characterized in that, The upper end of the bracket (19) has two symmetrically distributed guide ends, and both guide ends are rotatably mounted with guide wheels (20). The outer periphery of the two guide wheels (20) extends to the inner and outer sides of the inspection well (1).

7. A city drainage pipeline inspection well according to any one of claims 1-6, characterized in that, The protective cover (3) is a cover that matches the external shape of the inspection well (1), and the upper end of the protective cover (3) is higher than the upper end of the inspection well (1). The center of the protective cover (3) has a well opening that is aligned with and adapted to the upper opening of the inspection well (1). The side wall of the well opening is provided with an opening (22) for the telescopic movement of the camera (8) and the telescopic mechanism (9).

8. A manhole for urban drainage pipelines according to claim 7, characterized in that, The telescopic mechanism (9) includes a threaded rod (91), a threaded sleeve (92), and a guide slider (93). One end of the threaded rod (91) has an optical shaft section and is rotatably connected to the upper end of the protective cover (3) and is driven by the winding mechanism. The other end of the threaded rod (91) is threadedly connected to one end of the threaded sleeve (92). The other end of the threaded sleeve (92) passes horizontally through the opening (22) and extends to the top of the inspection well (1) and is equipped with a camera (8). The guide slider (93) is installed on the upper part of the threaded sleeve (92) near the threaded rod (91), and the guide slider (93) is slidably assembled with the upper top wall of the protective cover (3).

9. A manhole for urban drainage pipelines according to claim 8, characterized in that, The upper top wall of the protective cover (3) is provided with a guide groove (23) that is consistent with and compatible with the movement path of the guide slider (93). The upper end of the guide slider (93) extends into the guide groove (23) and is slidably assembled with the guide groove (23).

10. A manhole for urban drainage pipes according to claim 8, characterized in that, The external dimensions of the camera (8) are smaller than the internal dimensions of the opening (22), and the camera (8) is connected to the display device via wired or wireless means to display a monitoring screen of the amount of sediment accumulation.

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