Water supply and drainage device for municipal road

Abstract

The invention discloses a water supply and drainage device for municipal roads, and relates to the technical field of road drainage, the water supply and drainage device comprises an inspection well, an inspection well cover, a cylindrical part, a floating column, a hinged support, a tension spring and a lifting unit, and the lifting unit is arranged on the inspection well cover and drives the floating column to move upwards when the liquid level in the inspection well rises to a fixed range; the ends, close to the floating column, of the tension springs move upwards, and the opposite ends of the multiple tension springs swing upwards in an inclined mode. According to the device, when the amount of rainwater is large, the liquid level of the rainwater in the inspection well rises, then the lifting unit is triggered to act, the lifting unit drives the floating column to move upwards, then the floating column drives the tension springs to move upwards, the opposite ends of the multiple tension springs move upwards, and plastic bags or leaves covering the surface of the inspection well cover can be jacked up; then, under the action of water flow on the road surface, the jacked plastic bags and leaves can be washed away, and the situation that the surface of the inspection well cover is shielded, and then the permeability of filter holes of the inspection well cover is affected is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of road drainage, in particular to a water supply and drainage device for municipal roads. Background Art

[0002] Municipal road drainage refers to the measures taken to remove precipitation from urban road surfaces. Usually, road surface water flows into the street ditch according to the slope of the road surface, and then flows from the street ditch into the connecting pipe through the rainwater outlet. From the connecting pipe, it enters the drainage main pipe through the inspection well, and then is discharged from the outlet of the drainage main pipe to nearby rivers, lakes, seas and other water bodies. The drainage of urban road surface water should be rapid and smooth, and water should not accumulate or form a water film on the road surface to affect driving.

[0003] In weather conditions with heavy rainfall, if floating objects such as plastic bags and leaves block the filter holes of the manhole cover, rainwater will not be able to quickly enter the drainage main pipe, and rainwater will accumulate on the road surface, causing the liquid level of the road surface to rise, creating a safety hazard. In the existing technology, leaves, plastic bags, etc. that block the filter holes of the manhole cover can only be removed manually, which makes the operation more inconvenient and easily creates other safety hazards for the staff. Summary of the Invention

[0004] The object of the present invention is to provide a water supply and drainage device for municipal roads to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A water supply and drainage device for a municipal road comprises an inspection well provided with a pipe interface, a manhole cover is placed on the top of the inspection well, and further comprises: A columnar portion is vertically fixed to the lower surface of the manhole cover, and a floating column is coaxially slidably penetrated by the columnar portion, and the upper end of the floating column and the surface of the manhole cover are each hinged with a plurality of hinge seats; A tension spring, with both ends fixedly connected to the floating column and the hinge seat on the manhole cover respectively, and an accommodating groove for the tension spring to pass freely is opened on the upper surface of the manhole cover; The lifting unit is provided on the manhole cover, and when the liquid level in the inspection well rises to a fixed range, it drives the floating column to move upward, and causes one end of the tension spring adjacent to the floating column to move upward, so that the opposite ends of the multiple tension springs tilt and swing upward.

[0006] Through the above technical solution, when the amount of rain is large, the rainwater level in the inspection well rises, which in turn triggers the action of the lifting unit, causing the lifting unit to drive the floating column to move upward, and then the floating column drives the tension spring to move upward, causing the relative ends of multiple tension springs to move upward, and can lift up the plastic bags or leaves covering the surface of the manhole cover, and then under the action of road water flow, the lifted plastic bags and leaves can be washed away, avoiding obstruction of the manhole cover surface, thereby affecting the permeability of the filter holes of the manhole cover.

[0007] Furthermore, the lifting unit includes a fixing ring fixedly sleeved on the lower end of the floating column, and a floating plate is fixedly sleeved on the periphery of the fixing ring.

[0008] Through the above technical solution, when the liquid level in the inspection well rises, the float plate will be affected by the buoyancy of rainwater, thereby causing the float plate to move upward and drive the floating column to move upward. When the floating column moves upward, it will stretch the tension spring and cause the relative ends of multiple tension springs to move upward.

[0009] Furthermore, a sliding sleeve is fixedly embedded in the cylindrical portion, and the floating column is slidably inserted into the sliding sleeve.

[0010] With the above technical solution, the sliding sleeve slides on the periphery of the floating column, so that the friction and wear on the floating column is reduced.

[0011] Furthermore, a plurality of levers are hingedly connected to the upper end of the floating column, and a receiving groove is provided on the wall of the floating column for the levers to pass freely. The columnar portion is provided with a rotating assembly, and the rotating assembly is used to drive the floating column to rotate when the floating column moves upward, so that the lever squeezes the tension spring, causing the tension spring to bend and deform.

[0012] Through the above technical solution, the floating column is driven to rotate by the rotating assembly, so that the lever can squeeze the tension spring, causing the tension spring to bend and deform, thereby reducing the gap between two adjacent tension springs, thereby being able to block leaves or plastic bags with smaller areas, and achieving better blocking of leaves or plastic bags with only a smaller number of tension springs.

[0013] Furthermore, the plurality of shift rods are respectively arranged between two adjacent tension springs.

[0014] Through the above technical solution, the extrusion effect of the shifting rod on the tension spring is better.

[0015] Furthermore, the rotating assembly includes a hollow seat connected to the lower end face of the cylindrical portion, the hollow seat is provided with a sliding hole for the floating column to pass freely, the hole wall of the sliding hole is rotatably embedded with a ball, the periphery of the floating column is provided with a special-shaped rolling groove, the special-shaped rolling groove includes a straight groove and a spiral groove connected end to end from top to bottom, and the ball rolls freely in the straight groove and the spiral groove.

[0016] Through the above technical solution, when the floating column moves upward, the ball rolls from the straight groove to the spiral groove, causing the floating column to rotate, and then the floating column drives the shift rod to rotate.

[0017] Furthermore, the two balls are symmetrically arranged along the axial direction of the floating column.

[0018] Through the above technical solution, the extrusion force of the two balls on the inner wall of the spiral groove can be uniform, thereby allowing the floating column to rotate smoothly.

[0019] Furthermore, the floating column is provided with a retracting and extending assembly, and the retracting and extending assembly is used to drive the plurality of the shifting rods to swing upward to a horizontal state when the floating column moves upward to a fixed position.

[0020] Through the above technical solution, the retraction and extension assembly drives the shift lever to swing to a horizontal state, so that the shift lever can generate a squeezing force on the tension spring when the floating column rotates.

[0021] Furthermore, the retraction and extension assembly includes a hinge rod hinged to the shift rod, a connecting cavity is opened in the floating column, a connecting rod is provided in the connecting cavity, the upper end of the connecting rod is hinged to multiple hinge rods, and a driving structure is provided in the connecting cavity, and the driving structure is used to drive the connecting rod to move upward.

[0022] Through the above technical solution, the driving structure drives the connecting rod to move upward, so that the hinge rod can drive the shifting rod to rotate.

[0023] Furthermore, the driving structure includes a hollow cylinder connected to the lower end surface of the hollow seat, the hollow cylinder is sleeved on the periphery of the floating column, the periphery of the floating column is fixedly sleeved with a piston, the piston and the inner cavity wall of the hollow cylinder form a sliding fit, the periphery of the floating column is provided with a through groove that passes through the connecting cavity, and a sliding plug is coaxially slidably installed in the connecting cavity, and the lower end of the connecting rod is fixedly connected to the upper end surface of the sliding plug.

[0024] Through the above technical solution, when the floating column moves upward, the piston will slide in the inner cavity of the hollow cylinder, so that the piston can squeeze the air in the inner cavity of the hollow cylinder into the through groove, and then enter the connecting cavity from the through groove, and enable the air to push the sliding plug to move upward. When the sliding plug moves upward, it will cause the connecting rod to move upward, and then the connecting rod will drive the hinge rod to swing, so that the hinge rod will drive the shift rod to swing upward.

[0025] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, when the amount of rainwater is large, the rainwater level in the inspection well rises, thereby triggering the action of the lifting unit, causing the lifting unit to drive the floating column to move upward, and then the floating column drives the tension spring to move upward, so that the opposite ends of the multiple tension springs move upward and can lift up the plastic bags or leaves covering the surface of the manhole cover. Then, under the action of the road water flow, the lifted plastic bags and leaves can be washed away, avoiding obstruction of the manhole cover surface and affecting the permeability of the filter holes of the manhole cover; 2. In the present invention, the floating column is driven to rotate by the rotating assembly, so that the lever can squeeze the tension spring, causing the tension spring to bend and deform, thereby reducing the gap between two adjacent tension springs, thereby being able to block leaves or plastic bags with a smaller area, and achieving better blocking of leaves or plastic bags with only a small number of tension springs; 3. In the present invention, when the floating column moves upward, the piston will slide in the inner cavity of the hollow cylinder, so that the piston can squeeze the air in the inner cavity of the hollow cylinder into the through groove, and then enter the connecting cavity through the through groove, and enable the air to push the sliding plug to move upward. When the sliding plug moves upward, it will cause the connecting rod to move upward, and then the connecting rod will drive the hinge rod to swing, so that the hinge rod will drive the shift rod to swing upward. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of a water supply and drainage device for municipal roads in the present invention; Figure 2 for Figure 1 Schematic diagram of the positional relationship of the middle part structure after it is cut open; Figure 3 for Figure 2 A schematic diagram of the positional relationship from another perspective; Figure 4 Schematic diagram of the positional relationship of the manhole cover, floating column and floating plate after assembly in the present invention; Figure 5 for Figure 4 Schematic diagram of the position relationship of the first perspective; Figure 6 for Figure 4 Schematic diagram of the positional relationship of some structures after being cut open in the second perspective; Figure 7 for Figure 6 Schematic diagram of the positional relationship of the local structure at A in the middle; Figure 8 for Figure 4 The schematic diagram of the position relationship after the manhole cover is omitted; Figure 9 for Figure 8 Schematic diagram of the exploded structure; Figure 10It is a structural schematic diagram of the hollow seat in the present invention; Figure 11 It is a structural schematic diagram of the floating column in the present invention; Figure 12 for Figure 11 Schematic cross-sectional view of the structure.

[0027] In the figure, the description of each figure mark is as follows: 1. Pipe interface; 2. Inspection well; 3. Manhole cover; 4. Floating column; 5. Push rod; 6. Tension spring; 7. Accommodating groove; 8. Floating plate; 9. Fixed ring; 10. Columnar part; 11. Hollow cylinder; 12. Hollow seat; 13. Hinge seat; 14. Piston; 15. Through groove; 16. Spiral groove; 17. Straight groove; 18. Storage groove; 19. Hinge rod; 20. Sliding plug; 21. Connecting rod; 22. Ball; 23. Connecting cavity. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] See also Figures 1-12 The present invention provides a technical solution: a water supply and drainage device for municipal roads, comprising an inspection well 2 with a pipe interface 1, a manhole cover 3 is placed on the top of the inspection well 2, the number of pipe interfaces 1 is at least two, and each is connected to an external drainage main pipe, the drainage main pipe is connected to the external drainage system, a plurality of filter holes are opened on the surface of the manhole cover 3, a columnar portion 10 is vertically fixed to the lower surface of the manhole cover 3, a floating column 4 is coaxially slidably penetrated by the columnar portion 10, and the upper end of the floating column 4 is hinged with a hinge Seat 13, in addition, the surface of the manhole cover 3 is also hinged with a hinge seat 13, and the hinge seat 13 on the floating column 4 and the hinge seat 13 on the manhole cover 3 are in a one-to-one correspondence. The two corresponding hinge seats 13 are commonly connected with a tension spring 6, and the two ends of the tension spring 6 in the elastic direction are respectively welded to the two corresponding hinge seats 13. The surface of the manhole cover 3 is provided with a receiving groove 7 for accommodating the tension spring 6. In addition, a sliding sleeve is fixedly embedded in the cylindrical portion 10, and the floating column 4 is slidably inserted into the sliding sleeve; The lower end of the floating column 4 is fixedly sleeved with a fixing ring 9, and the periphery of the fixing ring 9 is fixedly sleeved with a floating plate 8. When the liquid level in the inspection well 2 rises, it will generate an upward buoyancy on the floating plate 8. When the amount of rainwater on the municipal road is large, since the inspection well 2 is connected to the drainage system, the rainwater level in the inspection well 2 will be high. When the rainwater level rises, the rainwater will generate an upward buoyancy on the floating plate 8, thereby causing the floating plate 8 to move upward. As the rainwater level rises, the liquid level rises. The movement of the floating plate 8 is short and rapid, so that the floating plate 8 moves upward with a large amplitude in a short period of time. When the floating plate 8 moves upward, the ball 22 will gradually roll from the straight groove 17 to the spiral groove 16, so that when the floating column 4 moves upward, it will stretch the tension spring 6 and make the opposite ends of the multiple tension springs 6 move upward. In this way, the multiple tension springs 6 together form an umbrella-shaped structure, which can lift up the leaves, plastic bags, etc. covering the surface of the manhole cover 3, and the water flow on the road will impact the lifted leaves and plastic bags. The impact makes the leaves and plastic bags be washed away with the water flow, thereby preventing the leaves and plastic bags from blocking the filter holes of the manhole cover 3 and affecting the permeability of the filter holes of the manhole cover 3. In addition, the lower end face of the columnar portion 10 is connected with a hollow seat 12, and the hollow seat 12 is provided with a sliding hole for the floating column 4 to pass freely. The hole wall of the sliding hole is rotatably embedded with a ball 22, and the periphery of the floating column 4 is provided with a special-shaped rolling groove, which includes a straight groove 17 and a spiral groove 16 connected end to end from top to bottom. The ball 22 is rotated in the sliding hole. The balls 22 roll freely in the straight groove 17 and the spiral groove 16. When the floating column 4 moves upward, the balls 22 roll from the straight groove 17 into the spiral groove 16, causing the floating column 4 to rotate, thereby causing the floating column 4 to drive the lever 5 to rotate. In addition, the two balls 22 are symmetrically arranged along the axial direction of the floating column 4, so that the force exerted by the two balls 22 on the floating column 4 can be evenly applied to the floating column 4, allowing the floating column 4 to rotate smoothly. The multiple levers 5 are respectively arranged between two adjacent tension springs 6; The upper end of the floating column 4 is hinged with multiple levers 5, and the wall surface of the floating column 4 is provided with a receiving groove 18 for the lever 5 to pass freely. A hinge rod 19 is hinged on the lever 5, and a connecting cavity 23 is provided in the floating column 4. A connecting rod 21 is provided in the connecting cavity 23. The upper end of the connecting rod 21 is hinged with multiple hinge rods 19, and the lower end surface of the hollow seat 12 is connected to the hollow cylinder 11 by screws. The hollow cylinder 11 is sleeved on the periphery of the floating column 4, and the periphery of the floating column 4 is fixedly sleeved with a piston 14. The piston 14 and the inner cavity wall of the hollow cylinder 11 form a sliding fit. A through groove 15 that passes through the communicating cavity 23 is provided on the periphery of the floating column 4. The through groove 15 is located in the inner cavity of the hollow cylinder 11, and a sliding plug 20 is coaxially slidably installed in the communicating cavity 23. The lower end of the connecting rod 21 is fixedly connected to the upper end surface of the sliding plug 20. When the floating column 4 moves upward, the piston 14 will be in the hollow cylinder 11 slides in the inner cavity, so that the piston 14 can squeeze the air in the inner cavity of the hollow cylinder 11 into the through groove 15, and then enter the connecting cavity 23 from the through groove 15, and enable the air to push the sliding plug 20 to move upward. When the sliding plug 20 moves upward, it will cause the connecting rod 21 to move upward, and then the connecting rod 21 drives the hinge rod 19 to swing, so that the hinge rod 19 drives the lever 5 to swing upward, and the ball 22 will also roll from the straight groove 17 to the spiral groove 16, so that the floating column 4 will rotate. When the floating column 4 rotates, the lever 5 will rotate relative to the tension spring 6. Since the position of the end of the tension spring 6 away from the floating column 4 is fixed relative to the manhole cover 3, when the lever 5 rotates, it will squeeze the tension spring 6, so that the tension spring 6 is squeezed into a bent shape. After the tension spring 6 is bent, the gap between the two adjacent tension springs 6 can be reduced.

[0030] Working principle of the present invention: When the amount of rainwater on the municipal road is large, the inspection well 2 is connected to the drainage system, which will cause the rainwater level in the inspection well 2 to be high. When the rainwater level rises, the rainwater will generate an upward buoyancy on the float 8, thereby causing the float 8 to move upward. As the rainwater level rises in a large amount of rain, the liquid level rises in a short and rapid manner, thereby causing the float 8 to move upward in a short period of time. When the float 8 moves upward, the ball 22 will gradually roll from the straight groove 17 to the spiral groove. 16, so that when the floating column 4 moves upward, it will stretch the tension spring 6 and cause the opposite ends of the multiple tension springs 6 to move upward, so that the multiple tension springs 6 together form an umbrella-shaped structure, which can lift up leaves, plastic bags, etc. covering the surface of the manhole cover 3, and the water flow on the road will impact the lifted leaves and plastic bags, so that the leaves and plastic bags can be washed away by the water flow, thereby preventing the leaves and plastic bags from blocking the filter holes of the manhole cover 3 and affecting the permeability of the filter holes of the manhole cover 3; In addition, when the floating column 4 moves upward, when the ball 22 rolls in the spiral groove 16, it will generate an extrusion force on the inner wall of the spiral groove 16, thereby causing the floating column 4 to rotate. In addition, when the floating column 4 moves upward, the piston 14 will enter the inner cavity of the hollow cylinder 11, and as the floating column 4 moves upward, the piston 14 will move relative to the hollow cylinder 11, thereby allowing the piston 14 to squeeze the air in the inner cavity of the hollow cylinder 11, so that the air in the inner cavity of the hollow cylinder 11 is squeezed into the through groove 15, so that the air enters the connecting cavity 23 of the floating column 4 through the through groove 15, thereby allowing the air to generate an upward extrusion force on the sliding plug 20. After being squeezed, the sliding plug 20 will move upward and drive the connecting rod 21 to move upward. When the connecting rod 21 moves upward, it will generate a driving force on the hinge rod 19, thereby causing the hinge rod 19 to drive the shift rod 5 to swing, so that the shift rod 5 swings upward along the hinge with the floating column 4 to a horizontal state; When the floating column 4 swings to a horizontal state, the ball 22 will also roll from the straight groove 17 into the spiral groove 16, causing the floating column 4 to rotate. When the floating column 4 rotates, the lever 5 will rotate relative to the tension spring 6. Since the position of the tension spring 6 away from the end of the floating column 4 is fixed relative to the manhole cover 3, when the lever 5 rotates, it will squeeze the tension spring 6, causing the tension spring 6 to be squeezed into a bent shape. After the tension spring 6 is bent, the gap between the two adjacent tension springs 6 can be reduced, thereby having a better blocking effect on smaller leaves or plastic bags, and can have a better blocking effect on leaves and plastic bags when the number of tension springs 6 is small. In addition, when the floating column 4 rotates, the tension spring 6 can produce a rotating effect on the lifted leaves and plastic bags, thereby making the plastic bags and leaves fully contact with the water flow, so that the impact area of ​​the force of the water flow on the plastic bags and leaves can be changed, thereby making the water flow able to smoothly wash away the plastic bags and leaves; When the amount of rainwater decreases, the liquid level in the inspection well 2 drops, which will cause the floating plate 8 to move downward gradually, and the floating column 4 to move downward, so that the opposite end of the tension spring 6 gradually moves downward, and the ball 22 also rolls from the spiral groove 16 to the straight groove 17, thereby causing the lever 5 to rotate in the opposite direction, so that the extrusion force on the tension spring 6 disappears, and finally the tension spring 6 can be accommodated in the receiving groove 7. When the tension spring 6 is accommodated in the receiving groove 7, the top of the floating column 4 is flush with the top surface of the manhole cover 3, and the tension spring 6 is in the receiving groove 7, so that the floating column 4 and the tension spring 6 will not It protrudes to the top surface of the manhole cover 3 to avoid affecting pedestrians. In addition, when the floating column 4 moves downward, the piston 14 will move in the opposite direction in the hollow cylinder 11, and the air in the connecting chamber 23 will flow back to the hollow cylinder 11 through the through groove 15, so that under the action of air pressure, the sliding plug 20 moves downward, and the connecting rod 21 pulls the hinge rod 19 to swing in the opposite direction, so that the lever 5 can swing downward and be received in the receiving groove 18, and the surface of the lever 5 does not protrude to the periphery of the floating column 4, so that the floating column 4 can slide smoothly in the cylindrical portion 10.

[0031] It should be noted that, in this document, relational terms such as first and second, etc., are used only 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", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes 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. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the invention, and the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A water supply and drainage device for a municipal road, comprising an inspection well (2) provided with a pipe interface (1), a manhole cover (3) being arranged on the top of the inspection well (2), characterized in that: Also includes: The columnar portion (10) is vertically fixed to the lower surface of the manhole cover (3), and the columnar portion (10) is coaxially slidably provided with a floating column (4), and the upper end of the floating column (4) and the surface of the manhole cover (3) are each hinged with a plurality of hinge seats (13); A tension spring (6), both ends of which are fixedly connected to the floating column (4) and the hinge seat (13) on the manhole cover (3), respectively; the upper surface of the manhole cover (3) is provided with a receiving groove (7) for the tension spring (6) to pass freely; The lifting unit is provided on the manhole cover (3), and when the liquid level in the inspection well (2) rises to a fixed range, drives the floating column (4) to move upward, and causes one end of the tension spring (6) adjacent to the floating column (4) to move upward, so that the opposite ends of the plurality of tension springs (6) tilt and swing upward.

2. The water supply and drainage device for municipal roads according to claim 1, characterized in that: The lifting unit comprises a fixed ring (9) fixedly sleeved on the lower end of the floating column (4), and a floating plate (8) is fixedly sleeved on the periphery of the fixed ring (9).

3. The water supply and drainage device for municipal roads according to claim 1, characterized in that: A sliding sleeve is fixedly embedded in the columnar portion (10), and the floating column (4) is slidably inserted into the sliding sleeve.

4. The water supply and drainage device for municipal roads according to claim 1, characterized in that: The upper end of the floating column (4) is hinged with a plurality of shifting rods (5), and the wall surface of the floating column (4) is provided with a receiving groove (18) for the shifting rods (5) to pass freely. The columnar portion (10) is provided with a rotating assembly, and the rotating assembly is used to drive the floating column (4) to rotate when the floating column (4) moves upward, so that the shifting rods (5) squeeze the tension spring (6), causing the tension spring (6) to bend and deform.

5. The water supply and drainage device for municipal roads according to claim 4, characterized in that: The plurality of shifting rods (5) are respectively arranged between two adjacent tension springs (6).

6. The water supply and drainage device for municipal roads according to claim 4, characterized in that: The rotating assembly includes a hollow seat (12) connected to the lower end surface of the cylindrical portion (10), the hollow seat (12) is provided with a sliding hole for the floating column (4) to pass freely, the hole wall of the sliding hole is rotatably embedded with a ball (22), the periphery of the floating column (4) is provided with a special-shaped rolling groove, the special-shaped rolling groove includes a straight groove (17) and a spiral groove (16) connected end to end from top to bottom, and the ball (22) rolls freely in the straight groove (17) and the spiral groove (16).

7. The water supply and drainage device for municipal roads according to claim 6, characterized in that: The two balls (22) are symmetrically arranged along the axial direction of the floating column (4).

8. The water supply and drainage device for municipal roads according to claim 6, characterized in that: The floating column (4) is provided with a retracting and extending assembly, and the retracting and extending assembly is used to drive the plurality of shifting rods (5) to swing upward to a horizontal state when the floating column (4) moves upward to a fixed position.

9. The water supply and drainage device for municipal roads according to claim 8, characterized in that: The retractable and deployable assembly includes a hinge rod (19) hinged to the shift rod (5); a connecting cavity (23) is provided in the floating column (4); a connecting rod (21) is provided in the connecting cavity (23); the upper end of the connecting rod (21) is hinged to a plurality of hinge rods (19); a driving structure is provided in the connecting cavity (23); and the driving structure is used to drive the connecting rod (21) to move upward.

10. The water supply and drainage device for municipal roads according to claim 9, characterized in that: The driving structure includes a hollow cylinder (11) connected to the lower end surface of the hollow seat (12), the hollow cylinder (11) is sleeved on the periphery of the floating column (4), the periphery of the floating column (4) is fixedly sleeved with a piston (14), the piston (14) and the inner cavity wall of the hollow cylinder (11) form a sliding fit, the periphery of the floating column (4) is provided with a through groove (15) that passes through the connecting cavity (23), the connecting cavity (23) is coaxially slidably engaged with a sliding plug (20), and the lower end of the connecting rod (21) is fixedly connected to the upper end surface of the sliding plug (20).

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