Anti-impact cast iron well lid for urban road

Abstract

The invention discloses an anti-impact cast iron well lid for an urban road, and belongs to the technical field of well lids, the anti-impact cast iron well lid for the urban road comprises a base and a well lid body hinged to the base, and at least two reinforcing mechanisms are hinged to the circumferential side of the base; an anti-falling buffering mechanism is arranged in the base and comprises an anti-falling plate and a plurality of detachable buffering pieces, the detachable buffering pieces are arranged on the anti-falling plate, and a drainage accelerating mechanism is arranged in the middle of the well lid. According to the anti-impact cast iron well lid for the urban road, the reinforcing mechanism is hinged to the circumferential side of the base, when asphalt is tamped in a layered mode, the two limiting plates of the reinforcing plate are sequentially installed, combination of the base and an asphalt layer is enhanced, the connecting strength between the base and a surrounding foundation is improved, the anti-falling plate is provided with the detachable buffering piece, and the impact resistance is improved. A drainage accelerating mechanism is arranged, a second water inlet through hole is opened according to the actual water level, a protection plate is arranged, and safety is improved.

Description

Technical Field

[0001] The invention relates to the technical field of manhole covers, and in particular to an impact-resistant cast iron manhole cover for urban roads. Background Art

[0002] As one of the urban technical facilities, manhole covers are used to cover roads or deep wells on both sides of roads to prevent people or objects from falling. In order to ensure the impact resistance of manhole covers, cast iron materials are generally used. Cast iron materials have high strength, toughness and impact resistance. They are ideal materials for manufacturing impact-resistant manhole covers. For example, the patent with announcement number CN211665796U discloses an adjustable ductile iron anti-sinking manhole cover, including a ductile iron base, a connecting ring is fixedly connected to the upper end of the ductile iron base, a buffer mechanism is fixedly installed between the ductile iron base and the connecting ring, a manhole cover opening is opened in the middle of the upper end of the connecting ring, a ductile iron manhole cover is movably connected in the manhole cover opening, an anti-sinking cast iron ring is fixedly connected to the lower end of the ductile iron base, and a filter reminder mechanism is fixedly connected to the lower end of the anti-sinking cast iron ring. By arranging a buffer mechanism between the fixed ring and the base, the ductile iron manhole cover is prevented from sinking in long-term impact. However, there are still the following problems:

[0003] (1) The combination of the bottom cover and the foundation is poor, resulting in poor impact resistance.

[0004] (2) Drainage issues also need to be considered for manhole covers on urban roads. When there is a lot of water accumulation, the manhole cover needs to be opened manually, but the manhole cover is easily blocked by debris, affecting drainage efficiency. Summary of the invention

[0005] The purpose of the present invention is to provide an impact-resistant cast iron manhole cover for urban roads to solve the above-mentioned technical problems.

[0006] To achieve the above-mentioned object, the present invention provides an impact-proof cast iron manhole cover for urban roads, comprising a base and a manhole cover hinged to the base, wherein at least two reinforcement mechanisms are hinged to the circumferential side of the base; an anti-falling buffer mechanism is arranged in the base, and the anti-falling buffer mechanism comprises an anti-falling plate and a plurality of detachable buffer members, and the detachable buffer members are arranged on the anti-falling plate;

[0007] A drainage acceleration mechanism is arranged in the middle of the manhole cover.

[0008] Preferably, the reinforcement mechanism includes a hinged joint, which is installed on the circumference of the base and connected to a reinforcement plate. The reinforcement plate is an arc-shaped plate with connecting holes at the upper and lower ends. The arc-shaped plate is installed with a limit plate through the connecting holes.

[0009] Preferably, a C-shaped fixing groove and an entry groove connected to one end of the C-shaped fixing groove are provided on the inner side of the base, a fastening bolt is provided at the other end of the C-shaped fixing groove, and a fixing block on the circumferential side of the anti-fall plate is provided in the C-shaped fixing groove.

[0010] Preferably, the detachable buffer is Z-shaped, semicircular or C-shaped, the top of the detachable buffer is arranged in the first positioning groove at the bottom of the manhole cover, and a connecting piece is arranged at the bottom of the detachable buffer.

[0011] Preferably, the connecting part includes a hollow threaded tube with a built-in lifting spring, the hollow threaded tube is symmetrically provided with J-shaped grooves, a return spring is arranged on the circumferential side of the hollow threaded tube, the free end of the return spring is connected to one end of a limit pin, the end face of the other end of the limit pin is an inclined surface, the other end of the limit pin passes through the positioning hole of the hollow threaded tube and is arranged opposite to the plug-in column at the bottom of the detachable buffer component, and a guide column and a second positioning groove are arranged on the circumferential side of the plug-in column.

[0012] Preferably, the accelerated drainage mechanism includes an open-cover filter unit and a controller, and the open-cover filter unit is electrically connected to the controller.

[0013] Preferably, the opening filter unit includes a sealing plate arranged in the manhole cover accommodating groove, the sealing plate, a blind hole is provided on the upper side of the sealing plate, a buffer spring is provided in the blind hole, the buffer spring is connected to a wedge block, a guide positioning groove is provided on the lower side of the sealing plate, the top of the detachable buffer member arranged opposite to the sealing plate is arranged in the guide positioning groove, one end of the sealing plate is connected to a driving rack slidably arranged on the lower side of the manhole cover, the driving rack is meshed with a driving gear, the driving gear is installed at the output end of the opening drive motor, the opening drive motor is installed on the lower side of the manhole cover, the other end of the sealing plate is connected to the leveling plate, the leveling plate is connected to a plurality of parallel protective plates, and the protective plate is slidably arranged on the lower side of the manhole cover; a connecting through hole is provided on the lower side of the accommodating groove, the connecting through hole is arranged opposite to the support rod, the support rod is connected to one end of the lifting rack through the mounting plate, the lifting rack is meshed with the driving gear, a telescopic module is provided on the inner side of the base, and two parallel supporting plates are provided at the telescopic end of the telescopic module, and the supporting plate is arranged opposite to the mounting plate;

[0014] The cover opening drive motor and the telescopic module are both electrically connected to the controller.

[0015] Preferably, the accelerated drainage mechanism also includes a toggle unit, and the toggle unit includes an L-shaped toggle plate, a plurality of toggle protrusions are arranged on the top of the L-shaped toggle plate, the L-shaped toggle plate is installed on the rotating shaft of the first transmission gear through a bearing, the first transmission gear is connected to one end of the first connecting rod, the other end of the first connecting rod is connected to a slider, the slider is arranged on a guide rail, the guide rail is installed on the lower side of the manhole cover through an extension plate, one end of the first connecting rod is also connected to one end of the second connecting rod, one end of the second connecting rod is connected to a second transmission gear, the second transmission gear is meshed with the first transmission gear, and the other end of the second connecting rod is hinged on the guide rail and connected to a toggle drive motor;

[0016] The toggle drive motor is electrically connected to the controller.

[0017] Preferably, the base includes an anchoring ring and a connecting ring, the anchoring ring is provided with an arc-shaped oblong anchoring hole, the connecting ring is arranged on the anchoring ring and a reinforcing rib plate is arranged on the circumferential side.

[0018] Preferably, the manhole cover is provided with a plurality of circumferentially distributed first water inlet holes and a second water inlet hole located in the middle of the manhole cover, and an anti-slip protrusion and a water level sensor are provided on the upper side of the manhole cover. The water level sensor is electrically connected to the controller for detecting the water level on the upper side of the manhole cover. When the water level exceeds the set height, the telescopic module changes from an extended state to a retracted state, and the cover opening drive motor is turned on, so that the driving rack pulls the sealing plate to move into the accommodating groove, and at the same time, the lifting rack drives the support rod to descend to the set height, and the telescopic module changes from a retracted state to an extended state, and supports and limits the mounting plate through the support plate, the protective plate is pulled out, and the toggle drive motor is started, so that the L-shaped toggle plate rises and moves along the gap between the protective plates to toggle the debris, and then the L-shaped toggle plate descends and returns to the starting point of the gap, thereby realizing reciprocating toggle of the debris.

[0019] Therefore, the present invention adopts the above-mentioned anti-impact cast iron manhole cover for urban roads, which has the following beneficial effects:

[0020] (1) A reinforcement mechanism is hinged on the circumferential side of the base. When the asphalt is compacted in layers, the two limit plates of the reinforcement plate are installed in sequence to strengthen the connection between the base and the asphalt layer and improve the connection strength with the surrounding foundation. The anti-fall plate has a detachable buffer to improve impact resistance.

[0021] (2) A quick-draining mechanism is provided to open the second water inlet hole according to the actual water level, and a protective plate is provided to improve safety. A toggle unit is also provided to prevent larger debris from clogging the second water inlet hole.

[0022] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is an exploded view of an impact-resistant cast iron manhole cover for urban roads of the present invention;

[0024] Figure 2 This is a schematic diagram of the base structure of the present invention;

[0025] Figure 3 A top view of the base when the reinforcement plate of the present invention is unfolded;

[0026] Figure 4 This is a schematic diagram of the structure of the reinforcement plate of the present invention;

[0027] Figure 5 A top view of the manhole cover of the present invention;

[0028] Figure 6This is a schematic diagram of the structure of the drainage acceleration mechanism of the present invention;

[0029] Figure 7 It is a schematic diagram of the structure of the anti-falling plate of the present invention;

[0030] Figure 8 It is a schematic diagram of the structure of the connecting piece of the present invention;

[0031] Fig. 9 It is a cross-sectional view of the connecting piece of the present invention;

[0032] Fig.10 It is a structural schematic diagram of the toggle unit of the present invention;

[0033] Fig.11 It is a schematic diagram of the local structure of the toggle unit of the present invention.

[0034] Reference numerals

[0035] 1. Base; 11. C-shaped fixing groove; 12. Entry groove; 13. Fastening bolt; 14. Anchor ring; 15. Connecting ring; 16. Arc-shaped oblong anchor hole; 17. Reinforcement rib plate; 2. Manhole cover; 21. First water inlet hole; 22. Second water inlet hole; 23. Anti-skid protrusion; 24. Water level sensor; 25. First positioning groove; 3. Reinforcement mechanism; 31. Hinge joint; 32. Reinforcement plate; 33. Connecting hole; 34. Limiting plate; 4. Anti-falling buffer mechanism; 41. Anti-falling plate; 411. Fixed block; 42. Removable buffer; 421. Plug-in column; 422. Guide column; 423. Second positioning groove; 43. Connecting piece; 431. Hollow threaded pipe; 432. J-shaped groove; 433. Return spring; 434. Limiting Position pin; 435, lifting spring; 5, accelerated drainage mechanism; 51, cover opening filter unit; 511, sealing plate; 512, guide positioning groove; 513, wedge block; 514, driving rack; 515, driving gear; 516, cover opening driving motor; 517, leveling plate; 518, protective plate; 519, support rod; 5110, mounting plate; 5111, lifting rack; 52, toggle unit; 521, L-shaped toggle plate; 522, toggle protrusion; 523, first transmission gear; 524, first connecting rod; 525, slider; 526, guide rail; 527, extension plate; 528, second connecting rod; 529, second transmission gear; 5210, toggle driving motor; 53, controller; 6, telescopic module; 7, support plate. DETAILED DESCRIPTION

[0036] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the invented product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "setting", "installation", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0038] Example 1

[0039] like Figure 1 As shown, an impact-resistant cast iron manhole cover for urban roads includes a base 1 and a manhole cover 2 hinged to the base 1.

[0040] The base 1 includes an anchor ring 14 and a connecting ring 15. Figure 2 - Figure 3 As shown, the anchor ring 14 is provided with an arc-shaped oblong anchor hole 16 for installing anchor bolts. The connecting ring 15 is arranged on the anchor ring 14 and a reinforcing rib plate 17 is arranged on the circumferential side to improve the support strength. At least two reinforcing mechanisms 3 are hinged on the circumferential side of the base 1. In this embodiment, 7 are arranged on the circumference. No reinforcing mechanism 3 is arranged at the hinged part with the manhole cover 2 due to the setting of the hinge box. The reinforcing mechanism 3 includes a hinge joint 31. The hinge joint 31 is installed on the circumference of the base 1 and is connected to a reinforcing plate 32. The reinforcing plate 32 is an arc-shaped plate. The upper and lower ends of the arc-shaped plate are provided with connecting holes 33, as shown in FIG. Figure 4 As shown, the arc plate is installed with a limit plate 34 through the connection hole 33. During transportation, the reinforcement plate 32 is kept in contact with the outer wall of the connection ring 15. After the base 1 is anchored, the asphalt is compacted in layers. When the asphalt height is close to the bottom of the reinforcement plate 32, the lower limit plate 34 is fixed by screws, and the compacted asphalt is continued to be laid. When the asphalt height is close to the top of the reinforcement plate 32, the upper limit plate 34 is fixed by screws, and the compacted asphalt is continued to be laid until the set height is reached, so as to realize the combination of the base 1 and the asphalt layer and improve the connection strength with the surrounding foundation.

[0041] The base 1 is provided with an anti-falling buffer mechanism 4, such as Figure 7As shown, the anti-falling buffer mechanism 4 includes an anti-falling plate 41 and a plurality of detachable buffer parts 42. In the figure, only some of the detachable buffer parts 42 are installed. The detachable buffer parts 42 can also be installed according to actual conditions. The detachable buffer parts 42 are arranged on the anti-falling plate 41. The detachable buffer parts 42 of this embodiment are Z-shaped, and can also be arranged in a semicircular or C-shaped shape. The top of the detachable buffer part 42 is arranged in the first positioning groove 25 at the bottom of the manhole cover 2, and the bottom of the detachable buffer part 42 is provided with a connecting part 43. Adding the detachable buffer part 42 improves the impact resistance of the cover plate, and the detachable arrangement is convenient for the replacement of the detachable buffer part 42. Figure 8 - Fig. 9 As shown, the connecting member 43 includes a hollow threaded tube 431 with a built-in lifting spring 435, the hollow threaded tube 431 is symmetrically provided with a J-shaped groove 432, a return spring 433 is arranged on the circumferential side of the hollow threaded tube 431, the free end of the return spring 433 is connected to one end of a limit pin 434, the end face of the other end of the limit pin 434 is an inclined surface, the other end of the limit pin 434 passes through the positioning hole of the hollow threaded tube 431 and is arranged opposite to the plug-in column 421 at the bottom of the detachable buffer 42, and a guide column 422 and a second positioning groove 423 are arranged on the circumferential side of the plug-in column 421. When removing the connecting part 43, first pull out the limiting pin 434, press downward the plug-in column 421 or the removable buffer 42 to compress the lifting spring 435, rotate the plug-in column 421 or the removable buffer 42 to make the guide column 422 move along the J-shaped groove 432, release the limiting pin 434, and pull out the plug-in column 421. During installation, the guide column 422 of the plug-in column 421 moves along the J-shaped groove 432. After it is in place, the lifting spring 435 lifts the plug-in column 421 so that the guide column 422 is located at the tail end of the J-shaped groove 432. At the same time, the limiting pin 434 is stuck in the second positioning groove 423, which is convenient for installation and disassembly.

[0042] After installing the detachable buffer 42, the fixing block 411 on the circumferential side of the anti-falling plate 41 is moved along the entry groove 12 and the C-shaped fixing groove 11 on the inner side of the base 1. One end of the C-shaped fixing groove 11 is connected to the entry groove 12. The other end of the C-shaped fixing groove 11 is provided with a fastening bolt 13. After the anti-falling plate 41 is in place, it is fixed by the fastening bolt 13. The anti-falling plate 41 not only has the function of preventing falling, but also plays the role of supporting the manhole cover 2, thereby improving the impact resistance of the manhole cover 2.

[0043] A drainage acceleration mechanism 5 is provided in the middle of the manhole cover 2. Figure 5 - Figure 6As shown, the accelerated drainage mechanism 5 of this embodiment includes a cover opening filter unit 51 and a controller 53, and the cover opening filter unit 51 is electrically connected to the controller 53. The manhole cover 2 is provided with a plurality of circumferentially distributed first water inlet holes 21 and a second water inlet hole 22 located in the middle of the manhole cover 2. The upper side of the manhole cover 2 is provided with an anti-slip protrusion 23 and a water level sensor 24, and the water level sensor 24 is electrically connected to the controller 53 for detecting the water level on the upper side of the manhole cover 2.

[0044] The opening filter unit 51 includes a sealing plate 511 arranged in the receiving groove of the manhole cover 2, the sealing plate 511, a blind hole is opened on the upper side of the sealing plate 511, a buffer spring is arranged in the blind hole, and the buffer spring is connected with a wedge block 513 (triangular) The buffer spring plays a certain protective role, a guide positioning groove 512 is opened on the lower side of the sealing plate 511, and the top of the detachable buffer member 42 arranged opposite to the sealing plate 511 is arranged in the guide positioning groove 512, one end of the sealing plate 511 is connected to a driving rack 514 slidably arranged on the lower side of the manhole cover 2, the driving rack 514 is meshed with a driving gear 515, and the driving gear 515 is installed at the output end of the opening drive motor 516, and the opening drive motor 51 6 is installed on the lower side of the manhole cover 2, the other end of the sealing plate 511 is connected to the leveling plate 517, the leveling plate 517 is connected to a plurality of protective plates 518 arranged in parallel, and the protective plates 518 are slidably arranged on the lower side of the manhole cover 2; a connecting through hole is opened on the lower side of the accommodating groove, and the connecting through hole is arranged opposite to the support rod 519, and the support rod 519 is connected to one end of the lifting rack 5111 through the mounting plate 5110, and the lifting rack 5111 is meshed with the driving gear 515, and a telescopic module 6 is arranged on the inner side of the base 1, and two supporting plates 7 arranged in parallel are arranged at the telescopic end of the telescopic module 6, and the supporting plate 7 is arranged opposite to the mounting plate 5110; the cover opening drive motor 516 and the telescopic module 6 are both electrically connected to the controller 53.

[0045] When the water level above the manhole cover 2 is too high, the telescopic module 6 changes from an extended state to a retracted state, and the cover opening drive motor 516 is turned on, so that the driving rack 514 pulls the sealing plate 511 to move into the accommodating groove, and at the same time, the lifting rack 5111 drives the support rod 519 to drop to a set height, and then the telescopic module 6 changes from a retracted state to an extended state, and supports and limits the mounting plate 5110 through the support plate 7. At the same time, the protective plate 518 is pulled out to protect the opened second water inlet hole 22 to prevent vehicles from falling into the second water inlet hole 22 when passing by, thereby improving safety.

[0046] Example 2

[0047] The difference between this embodiment and embodiment 1 is that: Fig.10 - Fig.11As shown, the accelerated drainage mechanism 5 also includes a toggle unit 52 and the toggle unit 52 includes an L-shaped toggle plate 521, a plurality of toggle protrusions 522 are arranged on the top of the L-shaped toggle plate 521, the L-shaped toggle plate 521 is installed on the rotating shaft of the first transmission gear 523 through a bearing, the first transmission gear 523 is connected to one end of the first connecting rod 524, the other end of the first connecting rod 524 is connected to a slider 525, the slider 525 is arranged on a guide rail 526, and the guide rail 526 is installed on the lower side of the manhole cover 2 through an extension plate 527, one end of the first connecting rod 524 is also connected to one end of the second connecting rod 528, one end of the second connecting rod 528 is connected to a second transmission gear 529, the second transmission gear 529 is meshed with the first transmission gear 523, the other end of the second connecting rod 528 is hinged on the guide rail 526 and connected to a toggle drive motor 5210, and the toggle drive motor 5210 is electrically connected to the controller 53.

[0048] When the water level exceeds the set height, the telescopic module 6 changes from the extended state to the retracted state, and the cover opening drive motor 516 is turned on, so that the driving rack 514 pulls the sealing plate 511 to move into the accommodating groove, and at the same time, the lifting rack 5111 drives the support rod 519 to descend to the set height, and the telescopic module 6 changes from the retracted state to the extended state, and the mounting plate 5110 is supported and limited by the support plate 7. The protective plate 518 is pulled out, and the toggle drive motor 5210 is started, so that the L-shaped toggle plate 521 rises and moves along the gap between the protective plates 518 to toggle the debris. Then, the L-shaped toggle plate 521 descends and returns to the starting point of the gap, thereby realizing reciprocating toggle of the debris.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. An impact-resistant cast iron manhole cover for urban roads, comprising a base and a manhole cover hinged to the base, characterized in that: At least two reinforcement mechanisms are hinged on the circumferential side of the base; an anti-falling buffer mechanism is arranged inside the base, and the anti-falling buffer mechanism includes an anti-falling plate and a plurality of detachable buffer parts, and the detachable buffer parts are arranged on the anti-falling plate; A drainage acceleration mechanism is arranged in the middle of the manhole cover.

2. The impact-resistant cast iron manhole cover for urban roads according to claim 1 is characterized in that: The reinforcement mechanism includes a hinge joint, which is installed on the circumference of the base and connected with a reinforcement plate. The reinforcement plate is an arc plate with connection holes at the upper and lower ends. The arc plate is installed with a limit plate through the connection holes.

3. The anti-impact cast iron manhole cover for urban roads according to claim 2 is characterized in that: A C-shaped fixing groove and an entry groove connected to one end of the C-shaped fixing groove are arranged on the inner side of the base, a fastening bolt is arranged on the other end of the C-shaped fixing groove, and a fixing block on the circumferential side of the anti-falling plate is arranged in the C-shaped fixing groove.

4. The impact-resistant cast iron manhole cover for urban roads according to claim 3 is characterized in that: The detachable buffer is Z-shaped, semicircular or C-shaped, the top of the detachable buffer is arranged in the first positioning groove at the bottom of the manhole cover, and the bottom of the detachable buffer is provided with a connecting piece.

5. The impact-resistant cast iron manhole cover for urban roads according to claim 4 is characterized in that: The connecting part includes a hollow threaded tube with a built-in lifting spring, the hollow threaded tube is symmetrically provided with J-shaped grooves, a return spring is arranged on the circumferential side of the hollow threaded tube, the free end of the return spring is connected to one end of a limit pin, the end face of the other end of the limit pin is an inclined surface, the other end of the limit pin passes through the positioning hole of the hollow threaded tube and is arranged opposite to the plug-in column at the bottom of the detachable buffer component, and a guide column and a second positioning groove are arranged on the circumferential side of the plug-in column.

6. The anti-impact cast iron manhole cover for urban roads according to claim 4, characterized in that: The accelerated drainage mechanism comprises an open-cover filtering unit and a controller, and the open-cover filtering unit is electrically connected to the controller.

7. The impact-resistant cast iron manhole cover for urban roads according to claim 6 is characterized in that: The opening filter unit includes a sealing plate arranged in the manhole cover receiving groove, the sealing plate, a blind hole is opened on the upper side of the sealing plate, a buffer spring is arranged in the blind hole, the buffer spring is connected with a wedge block, a guide positioning groove is opened on the lower side of the sealing plate, the top of the detachable buffer member arranged opposite to the sealing plate is arranged in the guide positioning groove, one end of the sealing plate is connected with a driving rack slidably arranged on the lower side of the manhole cover, the driving rack is meshed with a driving gear, the driving gear is installed at the output end of the opening drive motor, the opening drive motor is installed on the lower side of the manhole cover, the other end of the sealing plate is connected with a leveling plate, the leveling plate is connected with a plurality of protective plates arranged in parallel, and the protective plate is slidably arranged on the lower side of the manhole cover; a connecting through hole is opened on the lower side of the receiving groove, the connecting through hole is arranged opposite to the support rod, the support rod is connected to one end of the lifting rack through the mounting plate, the lifting rack is meshed with the driving gear, a telescopic module is arranged on the inner side of the base, and two support plates arranged in parallel are arranged at the telescopic end of the telescopic module, and the support plate is arranged opposite to the mounting plate; The cover opening drive motor and the telescopic module are both electrically connected to the controller.

8. The impact-resistant cast iron manhole cover for urban roads according to claim 7 is characterized in that: The accelerated drainage mechanism also includes a toggle unit and the toggle unit includes an L-shaped toggle plate, a plurality of toggle protrusions are arranged on the top of the L-shaped toggle plate, the L-shaped toggle plate is installed on the rotating shaft of the first transmission gear through a bearing, the first transmission gear is connected to one end of the first connecting rod, the other end of the first connecting rod is connected to a slider, the slider is arranged on a guide rail, the guide rail is installed on the lower side of the manhole cover through an extension plate, one end of the first connecting rod is also connected to one end of the second connecting rod, one end of the second connecting rod is connected to a second transmission gear, the second transmission gear is meshed with the first transmission gear, and the other end of the second connecting rod is hinged on the guide rail and connected to a toggle drive motor; The toggle drive motor is electrically connected to the controller.

9. The anti-impact cast iron manhole cover for urban roads according to claim 8, characterized in that: The base comprises an anchoring ring and a connecting ring. The anchoring ring is provided with an arc-shaped oblong anchoring hole. The connecting ring is arranged on the anchoring ring and a reinforcing rib plate is arranged on the circumferential side.

10. The anti-impact cast iron manhole cover for urban roads according to claim 9, characterized in that: The manhole cover is provided with a plurality of circumferentially distributed first water inlet holes and a second water inlet hole located in the middle of the manhole cover. An anti-slip protrusion and a water level sensor are provided on the upper side of the manhole cover. The water level sensor is electrically connected to the controller for detecting the water level on the upper side of the manhole cover. When the water level exceeds the set height, the telescopic module changes from an extended state to a retracted state, and the cover opening drive motor is turned on, so that the driving rack pulls the sealing plate to move into the accommodating groove, and at the same time, the lifting rack drives the support rod to descend to the set height. The telescopic module changes from a retracted state to an extended state, and supports and limits the mounting plate through the support plate. The protective plate is pulled out, and the toggle drive motor is started, so that the L-shaped toggle plate rises and moves along the gap between the protective plates to toggle the debris. Then, the L-shaped toggle plate descends and returns to the starting point of the gap, thereby realizing reciprocating toggle of the debris.

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