A wash-sweep device for tunnel cleaning

Abstract

This utility model discloses a cleaning and sweeping device for tunnel cleaning, including a fixed rod, two connecting rods, a rotating rod, a C-frame, a pneumatic rod, a bent water pipe, a nozzle, a scrubbing head, and a pneumatic pump; the fixed rod is connected to the vehicle's bumper; the two connecting rods are arranged in parallel, and the two ends of the two connecting rods are respectively connected to one end of the rotating rod and the bottom end of the C-frame, thereby forming a parallelogram linkage mechanism of the two connecting rods, the connecting section between the rotating rod and the two connecting rods, and the connecting section between the bottom end of the C-frame and the two connecting rods; the other end of the rotating rod is hinged to the end of the fixed rod near the outside of the vehicle's bumper; both ends of the pneumatic rod are respectively connected to any one of the connecting rods and the rotating rod; the bent water pipe has at least a horizontal section and a vertical section and is connected to the upper end of the open end of the C-frame, and the nozzle is connected to the vertical section of the water pipe; the pneumatic pump is located at the upper end of the open end of the C-frame and drives the scrubbing head to rotate.

Description

Technical Field

[0001] This utility model belongs to the field of tunnel maintenance technology, and in particular relates to a sweeping and cleaning device for tunnel cleaning. Background Technology

[0002] As an important transportation infrastructure, the cleaning and maintenance of tunnels' internal crash barriers, sidewalls, and road markings are crucial for ensuring driving safety and a clean tunnel environment. Currently, tunnel cleaning work still largely relies on manual labor or specialized equipment with limited functionality.

[0003] Existing technologies for sweeping and cleaning vehicles typically suffer from the following drawbacks: First, their sweeping and cleaning units often have simple structures and poor flexibility, frequently employing fixed angles or only single-dimensional adjustment capabilities. This makes them ill-suited to adapting to potential contour variations within tunnel walls, easily creating blind spots and resulting in incomplete cleaning. Second, traditional sweeping and cleaning units lack effective avoidance or pressure-adaptive mechanisms when encountering protrusions such as outlines or metal baffles on crash barriers. This not only easily leads to significant brush shedding from the roller brushes or brush heads, shortening their lifespan, increasing maintenance costs and operational interruptions, but also risks damaging equipment or tunnel facilities due to hard collisions. Finally, operating such equipment usually demands a high level of skill from the driver, requiring frequent adjustments to the vehicle position to align with the cleaning surface. This process is cumbersome and inefficient, and also poses safety risks in the narrow tunnel environment.

[0004] Therefore, there is an urgent need for a cleaning and sweeping device that can flexibly and accurately adapt to the tunnel wall structure, effectively avoid component damage during operation, and improve cleaning efficiency and automation. Summary of the Invention

[0005] To address the problems existing in the prior art, this utility model proposes a sweeping and cleaning device for tunnel cleaning.

[0006] The technical solution of this utility model is as follows:

[0007] A cleaning and sweeping device for tunnel cleaning, installed on a vehicle, includes a pneumatic pump mounting bracket, a brush head, a fixed rod connected to the bumper of the vehicle, a rotating frame with one end hinged to the fixed rod, two connecting rods arranged in parallel and connected at both ends to the other end of the rotating frame and one end of the pneumatic pump mounting bracket, a pneumatic rod connected at both ends to the connecting rod and the rotating frame, a water spray pipe connected to the pneumatic pump mounting bracket via a water pipe support, and a pneumatic pump mounted on the pneumatic pump mounting bracket that drives the brush head to rotate.

[0008] The rotation of the rotating frame relative to the fixed rod causes the pneumatic pump mounting frame to move horizontally, and the extension and retraction of the pneumatic rod drives the connecting rod to raise or lower the pneumatic pump mounting frame vertically.

[0009] Furthermore, the pneumatic pump mounting bracket includes a C-shaped bracket and a bushing, and the two connecting rods are connected to the bottom end of the C-shaped bracket; the upper end of the open end of the C-shaped bracket is provided with a through hole that fits the bushing, the bushing is connected in the through hole, and the output shaft of the pneumatic pump is rotatably disposed in the bushing and the lower end extends out of the bushing and is connected to the rotating shaft of the brush head.

[0010] Furthermore, the water spray fitting includes a water pipe having at least a horizontal section and a vertical section, a nozzle connected to the vertical section, and a water inlet hose connected to the horizontal section; the center portion of the horizontal section is bent into a semi-circular arc attached to the outside of the bushing and supported by the water pipe support.

[0011] Furthermore, the water pipe support includes two support discs with a central through hole and mounting holes evenly distributed around the circumference, a screw nut connector installed in the mounting holes, and a fixing nut. The two support discs are respectively located at the upper and lower ends of the horizontal section, pass through the through hole to the lower end of the bushing, and are positioned and connected to the bushing by the fixing nut, thereby supporting the water spray pipe.

[0012] Furthermore, the pneumatic rod and the pneumatic pump are connected to the vehicle's pneumatic components or an external pneumatic source via pipelines.

[0013] Furthermore, the rotating frame includes a rotating rod with one end hinged to a fixed rod and the other end connected to two connecting rods, and a pipeline support frame vertically mounted on the rotating rod; the pipeline support frame includes a vertical rod fixedly connected to the rotating rod and a pipeline guide groove connected to the vertical rod.

[0014] Furthermore, the connecting rod includes two flat rods and a connecting rod connecting the two flat rods;

[0015] Furthermore, the brush head includes a rotating shaft connected to the output shaft of the pneumatic pump, multiple sets of mounting discs sleeved on the rotating shaft, and bristles connected to the mounting discs.

[0016] Furthermore, the sweeping device also includes an arm hinged to a fixed rod, a connecting arm hinged to the arm, and a marking cleaning pipeline provided on the connecting arm and equipped with a vertically downward nozzle, thereby forming a marking cleaning assembly.

[0017] Furthermore, the sweeping device also includes a sludge suction assembly, which includes a sludge suction pump, a cantilever hinged to the vehicle bumper, a sludge storage device connected to the outlet of the sludge suction pump, a sludge suction pipe with one end connected to the inlet of the sludge suction pump and fixed to the cantilever, and a suction head installed at the other end of the sludge suction pipe.

[0018] Compared with the prior art, this utility model has the following beneficial effects:

[0019] This invention provides a sweeping and cleaning device for tunnel cleaning. This device, through a rotating rod, two parallel connecting rods, and a parallelogram linkage mechanism formed with the bottom of a C-frame, solves the technical problems of insufficient flexibility and limited adjustment dimensions in traditional sweeping and cleaning devices. This structure allows operators to easily move the C-frame and brush head laterally on the horizontal plane by driving the rotating rod, thereby achieving flexible horizontal adjustment of the brush head's working position. This effectively expands the coverage area of ​​a single operation and avoids the inconvenience and safety risks caused by frequent vehicle adjustments.

[0020] This utility model's cleaning and sweeping device solves the problem of the cleaning mechanism's inability to accurately and quickly raise and lower vertically by incorporating a pneumatic rod connected to the rotating rod and connecting rod. The extension and retraction of the pneumatic rod drives the entire parallelogram linkage mechanism, causing the C-shaped frame and brush head to stably rise or fall vertically. This design allows the brush head to precisely adapt to the cleaning surface of anti-collision walls at different heights, and can quickly rise to avoid protrusions on the wall, while also compactly retracting after operation, greatly improving adaptability to the working environment and the equipment's maneuverability.

[0021] This invention's cleaning and sweeping device integrates a pneumatic pump that drives the brush head and a bent water pipe with a nozzle onto the open end of a C-frame. This design solves the problem of poor coordination between cleaning and sweeping functions. The integrated design ensures that the water from the nozzle is precisely aimed at the brush head's working area, significantly improving the cleaning efficiency and effectiveness for stubborn stains on tunnel walls.

[0022] In this utility model, the horizontal section of the bent water pipe of the washing and sweeping device is tightly attached to the outside of the pneumatic pump shaft sleeve by a support frame. The support frame increases reliable fixation, and the water pipe layout is more compact and reasonable. This not only improves the overall rigidity and stability of the structure, but also extends the service life of the water pipe and ensures the continuity of water supply operations.

[0023] This utility model's sweeping and washing device solves the problems of complex maintenance and high cost of traditional hydraulic drive systems by using a pneumatic pump and pneumatic rod connected to the vehicle's pneumatic system as the core power source. Utilizing the vehicle's existing air source, it achieves convenient and economical power acquisition. Furthermore, the pneumatic components offer fast response and stable operation, making it particularly suitable for sweeping operations requiring frequent start-stop and pressure control. Attached Figure Description

[0024] Figure 1 A top-view diagram showing the connection between the sweeping and washing device and the vehicle;

[0025] Figure 2 This is a schematic diagram of the sweeping and cleaning device;

[0026] Figure 3 A schematic diagram showing the connection between the rotating frame, connecting rod, pneumatic rod, and C-frame;

[0027] Figure 4 A schematic diagram illustrating how the C-frame is lowered by extending the pneumatic rod;

[0028] Figure 5 for Figure 2 Schematic diagram of direction B (pipeline support frame structure).

[0029] Figure 6 This is a schematic diagram of the linkage structure;

[0030] Figure 7 for Figure 6 A schematic diagram of direction AA;

[0031] Figure 8 One of the schematic diagrams showing the connection between the water spray pipe fittings and the water pipe support;

[0032] Figure 9 This is the second schematic diagram showing the connection between the water spray pipe fittings and the water pipe support fittings;

[0033] Figure 10 This is a schematic diagram showing the connection between the scrubbing head and the output shaft of the pneumatic pump.

[0034] Figure 11 This is a diagram showing the connection between the brush bristles and the mounting plate;

[0035] In the diagram, 1-fixed rod; 2-rotating frame; 21-rotating rod; 22-pipeline support frame; 221-upright pole; 222-pipeline guide groove; 3-connecting rod; 31-flat rod; 32-connecting rod; 4-pneumatic rod; 5-pneumatic pump mounting bracket; 51-C-shaped bracket; 52-shaft sleeve; 6-spray fitting; 61-water pipe; 611-horizontal section; 612-vertical section; 62-spray head; 63-inlet hose; 7-water pipe support; 71-support plate; 72-screw and nut connector; 8-wash brush head; 81-rotating shaft; 82-mounting plate; 83-brush bristles; 9-vehicle; 91-bumper; 10-pneumatic pump; 101-pneumatic pump output shaft. Detailed Implementation

[0036] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention. After reading the present invention, any modifications of the present invention in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[0037] Example 1:

[0038] This utility model discloses a sweeping and cleaning device for tunnel cleaning, which is installed on vehicle 9, such as... Figure 1 and Figure 2 As shown, the device includes a fixed rod 1, a rotating frame 2, two connecting rods 3, a pneumatic rod 4, a pneumatic pump mounting bracket 5, a water spray pipe fitting 6, a water pipe support 7, a wash head 8, and a pneumatic pump 10 mounted on the pneumatic pump mounting bracket 5 and driving the wash head 8 to rotate. The fixed rod 1 is detachably connected to the bumper 91 of the vehicle 9 for easy installation and maintenance. The fixed rod 1 serves as the base of the sweeping device, providing a stable support foundation for the subsequent motion mechanism.

[0039] To achieve flexible vertical positioning of the brush head 8, the sweeping device of this invention is designed with a parallelogram linkage mechanism. For example... Figure 3 As shown, the mechanism consists of a rotating frame 2, two parallel connecting rods 3, and a pneumatic pump mounting bracket 5. Specifically, one end of each connecting rod 3 is connected to one end of the rotating frame 2, and the other end is connected to one end of the pneumatic pump mounting bracket 5. Thus, the two connecting rods 3, the connecting section between the rotating frame 2 and the two connecting rods 3, and the connecting section between the pneumatic pump mounting bracket 5 and the two connecting rods form a parallelogram linkage mechanism. One end of a pneumatic rod 4 is connected to any one of the connecting rods 3, and the other end is connected to the rotating frame 2. When the length of the pneumatic rod 4 changes, it drives the entire parallelogram mechanism to deform, thereby converting it into a lifting or lowering motion of the pneumatic pump mounting bracket 5 in the vertical direction. Figure 2 and Figure 4 As shown, the pneumatic rod 4 extends in length, and the pneumatic pump mounting bracket 5 faces downwards as a whole; Figure 6 and Figure 7 As shown, the connecting rod 3 includes two flat rods 31 and a connecting rod 32 connecting the two flat rods 31; the connecting rod makes the connecting rod structure more stable.

[0040] The other end of the rotating frame 2 is hinged to the end of the fixed rod 1 near the outside of the vehicle bumper; by rotating the rotating frame 2 around the hinge point with the fixed rod 1, other components connected to the rotating frame can perform stable lateral translational movement.

[0041] The pneumatic pump mounting bracket 5 includes a C-shaped bracket 51 and a bushing 52 fixed to the upper end of the open end of the C-shaped bracket 51. Two connecting rods 3 are hinged to the bottom end of the C-shaped bracket 51. The upper end of the open end of the C-shaped bracket 51 is provided with a through hole that fits the bushing 52. The bushing 52 is connected in the through hole. The output shaft 101 of the pneumatic pump is rotatably mounted in the bushing 52 and its lower end extends out of the bushing 52 and connects to the rotating shaft of the brush head 8. Optionally, a mounting groove (not separately labeled in the figure) is also provided on the mating surface of the C-shaped bracket 51 and the bushing corresponding to the bushing mounting position for positioning and limiting the bushing.

[0042] The water spray fitting 6 is connected to the pneumatic pump mounting bracket 5 via a water pipe support 7. The water spray fitting 6 includes a water pipe 61 with a horizontal section 611 and a vertical section 612, which is bent. The center of the horizontal section 611 is bent into a semi-circular arc that fits tightly against the outer contour of the bushing 52 and is supported by the water pipe support 7. The nozzle 62 is connected to the vertical section 612, and the inlet hose 63 is connected to the horizontal section 611, responsible for introducing water flow. Further, there are two vertical sections 612, which are respectively connected to one end of the horizontal section 611 and have their lower ends closed. The nozzle 62 is set on the two vertical sections facing the scrubbing head 8 or facing the wall. External water enters the horizontal section of the water pipe through a water pump and a water valve, and then sprays out from the nozzle on the vertical section of the water pipe. When the nozzle 62 is facing the scrubbing head 8... Dual-sided water supply ensures that the water flow evenly covers the entire brush head, providing ample and balanced wetting and rinsing power, thus improving the uniformity of the cleaning effect from the source. When the nozzle 62 is pointed towards the wall, the dual-sided water supply can provide two rinsing angles, increasing the rinsing effect on the wall.

[0043] The rotation of the rotating rod relative to the fixed rod causes the brush head on the C-shaped frame to move horizontally, thereby moving the brush head closer to or away from the wall to avoid protruding obstacles or to perform targeted heavy or light scrubbing of the wall.

[0044] The extension and retraction of the pneumatic rod drives the connecting rod, which in turn raises or lowers the scrubbing head on the C-frame, thus adapting to different positions on the tunnel wall.

[0045] like Figure 8 and Figure 9 As shown, the water pipe support 7 includes two support discs 71 with a central through hole and circumferentially distributed mounting holes, a screw and nut connector 72 installed in the mounting holes, and a fixing nut 73. The two support discs 71 are respectively positioned at the upper and lower ends of the horizontal section 611. They pass through the through holes to the lower end of the bushing 52 and are positioned and connected to the bushing 52 by the fixing nut 73, thereby supporting the water spray pipe. After installation, the upper and lower support discs clamp and hold the water pipe, which passes through the central through hole to the lower end of the bushing 52 and is locked in place by the fixing nut. This design increases the vibration and torsional resistance of the water spray pipe, preventing the overall structure from loosening or being damaged due to continuous vibration caused by vehicle movement or brush head operation. Replaceable pads can be installed on the contact surfaces of the upper and lower support discs and the horizontal section 611 of the water pipe. Figure 9 The center is highlighted in blue. The pads serve a dual purpose of cushioning and vibration reduction, as well as protecting the pipe walls. They can absorb minor vibrations and prevent the hard metal discs from wearing down the water pipe surface over long-term use, thus significantly improving the durability of the components and reducing maintenance intervals.

[0046] The pneumatic rod 4 and the pneumatic pump 10 are connected to the pneumatic components of the vehicle 9 or an external pneumatic source via pipelines (not separately labeled in the figure). This power solution makes full use of the vehicle's existing or industry-standard pneumatic energy sources, avoiding the complexity and high cost of configuring a separate hydraulic system or high-power motor for the cleaning device, significantly improving the equipment's economy and ease of promotion; the pneumatic components themselves have the characteristic of fast response speed, which enables the vertical lifting and horizontal movement control of the brush head to be rapid, gentle and safe, especially suitable for tunnel cleaning conditions that require frequent start-stop and pressure adaptation.

[0047] Considering the pipeline management issues existing in the sweeping and cleaning system, such as... Figure 2 and Figure 5 As shown, the rotating frame 2 includes a rotating rod 21 with one end hinged to the fixed rod 1 and the other end connected to two connecting rods 3, and a pipeline support frame 22 vertically mounted on the rotating rod 21. The pipeline support frame 22 includes a vertical rod 221 fixedly connected to the rotating rod 21 and a pipeline guide groove 222 connected to the vertical rod 221. All pneumatic pipelines leading to the pneumatic rod 4 and the pneumatic pump 10, as well as the water inlet hose 63 leading to the water spray fitting 6, can be orderly stored and confined within this pipeline guide groove 222, solving the core problem of pipeline management in multi-degree-of-freedom motion mechanisms. This pipeline guide groove improves the safety and reliability of the washing and sweeping operation, effectively extends the service life of various hoses and pipelines, and reduces maintenance and downtime caused by pipeline damage. Figure 2 As shown, optionally, the pipeline support frame 22 can be vertically mounted on the rotating rod 21 via a fixed support rod (not separately labeled in the figure), and the connecting rod 3 can also be connected to the rotating frame 2 via the fixed support rod.

[0048] like Figure 10 and Figure 11 As shown, the scrubbing head 8 includes a rotating shaft 81 connected to the output shaft of the pneumatic pump 10, multiple sets of mounting discs 82 sleeved on the rotating shaft 81 and spaced apart along the axial direction of the rotating shaft 81, and bristles connected to the mounting discs 82. The axial distribution of the multiple sets of mounting discs 82 allows the bristles 83 at different heights to form a wide and uniform force-bearing surface. Therefore, it can effectively increase the cleaning coverage area of ​​a single operation, improve efficiency, and the modular disc brush structure has good maintenance convenience and adaptability. When a single mounting disc 82 or a local area of ​​bristles 83 is damaged, it can be replaced selectively without discarding the entire scrubbing head, greatly saving maintenance costs. At the same time, by selecting bristles of different materials, hardness, or density, or adjusting the spacing between the mounting discs, this scrubbing head can flexibly adapt to a variety of cleaning tasks, from ordinary stains on tunnel sidewalls to stubborn deposits on crash barrier corners, demonstrating strong adaptability to various working conditions.

[0049] Example 2:

[0050] The sweeping and washing device also includes an arm hinged to a fixed rod, a connecting arm hinged to the arm, and a marking cleaning pipeline mounted on the connecting arm with vertically downward nozzles, thus forming a marking cleaning assembly. By rotating the arm relative to the fixed rod and the connecting arm relative to the arm, the nozzles are adjusted to be above the ground markings. External water enters the marking cleaning pipeline through a water pump and valve and is sprayed out from the nozzles to clean the markings below the nozzles. This marking cleaning assembly can be flexibly installed on vehicles according to actual operational needs, or can be independently disassembled when not in use, achieving modular expansion of functionality. This modular design allows a single device to handle both vertical surface cleaning and horizontal marking cleaning. Users can freely combine functions according to tasks, greatly improving the versatility and operational efficiency of the sweeping and washing device, while reducing the cost of purchasing multiple dedicated devices.

[0051] Example 3:

[0052] The sweeping and cleaning system also includes an expandable suction assembly, which comprises a suction pump, a cantilever hinged to the vehicle's rear bumper, a waste collection device (sewage tank / bucket) connected to the pump's outlet, a suction pipe connected at one end to the pump's inlet and fixed to the cantilever, and a suction head mounted at the other end of the suction pipe. By rotating the cantilever relative to the rear bumper, the suction head on the suction pipe is adjusted above the trench or other target location. Under the action of the suction pump, waste is sucked into the suction head and flows through the suction pipe into the waste collection device. Workers can freely choose whether to install this system with the sweeping and cleaning system as needed, demonstrating a high degree of design flexibility and expandability. This expandable design solves the problem of waste recovery in tunnels, enabling integrated sweeping, cleaning, and suction operations. Users can freely assemble the required functions according to the specific requirements of tunnel cleaning, significantly improving cleaning thoroughness and allowing the sweeping and cleaning system to adapt to various complex operating scenarios.

[0053] The above description is only a specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sweeping and cleaning device for tunnel cleaning, installed on a vehicle, characterized in that, The device includes a pneumatic pump mounting bracket, a wash head, a fixed rod connected to the bumper of the vehicle, a rotating frame with one end hinged to the fixed rod, two connecting rods arranged in parallel and connected at both ends to the other end of the rotating frame and one end of the pneumatic pump mounting bracket, a pneumatic rod connected at both ends to the connecting rod and the rotating frame, a water spray pipe connected to the pneumatic pump mounting bracket via a water pipe support, and a pneumatic pump mounted on the pneumatic pump mounting bracket that drives the wash head to rotate. The rotation of the rotating frame relative to the fixed rod causes the pneumatic pump mounting frame to move horizontally, and the extension and retraction of the pneumatic rod drives the connecting rod to raise or lower the pneumatic pump mounting frame vertically.

2. The sweeping and cleaning device for tunnel cleaning according to claim 1, characterized in that, The pneumatic pump mounting bracket includes a C-shaped bracket and a bushing. The two connecting rods are connected to the bottom end of the C-shaped bracket. The upper end of the open end of the C-shaped bracket is provided with a through hole that fits the bushing. The bushing is connected in the through hole. The output shaft of the pneumatic pump is rotatably disposed in the bushing and its lower end extends out of the bushing and is connected to the rotating shaft of the brush head.

3. The sweeping and cleaning device for tunnel cleaning according to claim 2, characterized in that, The water spray fitting includes a water pipe having at least a horizontal section and a vertical section, a nozzle connected to the vertical section, and a water inlet hose connected to the horizontal section; the center of the horizontal section is bent into a semi-circular arc attached to the outside of the bushing and supported by the water pipe support.

4. The sweeping and cleaning device for tunnel cleaning according to claim 3, characterized in that, The water pipe support includes two support discs with a central through hole and mounting holes evenly distributed around the circumference, a screw nut connector installed in the mounting holes, and a fixing nut. The two support discs are respectively located at the upper and lower ends of the horizontal section, pass through the through hole to the lower end of the bushing, and are positioned and connected to the bushing by the fixing nut, thereby supporting the water spray pipe.

5. The sweeping and cleaning device for tunnel cleaning according to claim 1, characterized in that, The pneumatic rod and the pneumatic pump are connected to the vehicle's pneumatic components or an external pneumatic source via pipelines.

6. The sweeping and cleaning device for tunnel cleaning according to claim 5, characterized in that, The rotating frame includes a rotating rod with one end hinged to a fixed rod and the other end connected to two connecting rods, and a pipeline support frame vertically mounted on the rotating rod; the pipeline support frame includes a vertical rod fixedly connected to the rotating rod and a pipeline guide groove connected to the vertical rod.

7. The sweeping and cleaning device for tunnel cleaning according to claim 1, characterized in that, The connecting rod includes two flat rods and a connecting rod that connects the two flat rods.

8. The sweeping and cleaning device for tunnel cleaning according to claim 1, characterized in that, The brush head includes a rotating shaft connected to the output shaft of the pneumatic pump, multiple sets of mounting discs sleeved on the rotating shaft, and bristles connected to the mounting discs.

9. The sweeping and cleaning device for tunnel cleaning according to claim 1, characterized in that, The sweeping device also includes an arm hinged to a fixed rod, a connecting arm hinged to the arm, and a marking cleaning pipeline provided on the connecting arm and equipped with a vertically downward nozzle, thereby forming a marking cleaning assembly.

10. The sweeping and cleaning device for tunnel cleaning according to claim 1, characterized in that, The sweeping and cleaning device also includes a sludge suction assembly, which includes a sludge suction pump, a cantilever hinged to the vehicle bumper, a sludge storage device connected to the outlet of the sludge suction pump, a sludge suction pipe with one end connected to the inlet of the sludge suction pump and fixed to the cantilever, and a suction head installed at the other end of the sludge suction pipe.

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