Protective well lid

Abstract

The invention relates to a well lid, in particular to a protective well lid. The invention provides the protective well lid with various safety protection functions. Comprising a walling crib, an anti-falling structure, an anti-backflow assembly and the like, the anti-falling structure is connected between the walling crib and a well sleeve, the anti-falling structure comprises a left connecting table arranged on the inner wall of the walling crib, a right connecting table arranged on the inner wall of the well sleeve and an anti-falling filter box, and the anti-falling filter box is detachably installed between the left connecting table and the right connecting table; an anti-backflow assembly used for blocking flood is arranged between the well lid and the anti-falling structure. Through the linkage cooperation effect of the blocking block, the connecting shaft and the blocking cover, normal and orderly drainage can be conducted by automatically adapting to the rainfall, when flood occurs, a double-layer sealing structure for preventing the flood from flowing backwards can be automatically formed along with the rising of the water level, serious water accumulation on the road surface is avoided, and then the use safety is improved; and the detachable anti-falling filter box is arranged in the well ring, so that the safety is further improved.

Description

Technical Field

[0001] The present invention relates to a manhole cover, specifically a protective manhole cover. Background Art

[0002] In the prior art, flood prevention and anti-falling structures are mostly set independently, resulting in an increase in the thickness of the manhole cover, an increase in cost, and insufficient functional linkage.

[0003] For example, on the Chinese Patent Network, a patent for an invention of a protective spring-assisted ductile iron manhole cover is disclosed. Its application publication number is CN117536266A, and the application date is December 22, 2023. It mainly consists of a manhole cover, a manhole cover seat, and a spring-assisted component. On the one hand, by adding a grooved lock plate inside the manhole cover and a locking structure composed of a convex block, a radial chute, a radial rotating groove, a movable groove, a slider, a screw rod, and a lock block on the manhole cover seat, the position of the grooved lock plate can be locked by the locking structure, having an anti-theft effect, and no abnormal noise will occur when the manhole cover is used. On the other hand, a spring-assisted component is added between the manhole cover and the manhole cover seat. When the locking structure releases the position lock of the grooved lock plate, the manhole cover will automatically pop up under the action of the spring-assisted component, facilitating opening. However, the protection function of this device is relatively single, and it does not have the function of automatically preventing flood backflow. It is difficult to combine the normal drainage function and the function of preventing flood backflow in a linkage manner. Therefore, there are still certain deficiencies in actual use, and it is necessary to improve it to adapt to the complex and changeable climate environment.

[0004] In view of this, a protective manhole cover with multiple safety protection functions is specifically proposed to solve the above technical problems. Summary of the Invention

[0005] In order to overcome the shortcomings that the functions of existing manhole covers are relatively single, lack functions with multiple protection effects at the same time, and are difficult to adapt to the existing complex and changeable climate environment, the purpose of the present invention is to provide a protective manhole cover with multiple safety protection functions.

[0006] Technical Solution: A protective manhole cover includes a well ring, a well sleeve, a manhole cover, and a connecting arm. The well sleeve is connected to the lower part of the well ring. The manhole cover is rotatably connected to the upper part of the well ring through the connecting arm. It further includes an anti-falling structure and an anti-backflow component. An anti-falling structure is connected between the well ring and the well sleeve. The anti-falling structure includes a left connecting platform on the inner wall of the well ring, a right connecting platform on the inner wall of the well sleeve, and an anti-falling filter box. The anti-falling filter box is detachably installed between the left connecting platform and the right connecting platform. An anti-backflow component for blocking floods is provided between the manhole cover and the anti-falling structure. The anti-backflow component includes a movable connecting shaft vertically penetrating the center of the anti-falling filter box, a blocking block fixed to the upper end of the connecting shaft, and a baffle provided at the lower end of the connecting shaft. When the baffle moves upward to the inner wall of the well sleeve, a sealing structure can be formed to prevent flood backflow.

[0007] As a further improvement of the above technical solution, the anti-backflow component further includes a drainage structure, which includes a connecting ring, a guide sleeve and a filter screen plate. The filter screen plate is embedded in the middle of the well cover. The bottom of the filter screen plate is communicated with the connecting ring. The end of the connecting ring is threadedly connected with the guide sleeve. Liquid discharge holes communicating with the connecting ring are circumferentially spaced on the guide sleeve, and the plug block is movably sleeved in the guide sleeve. When the water level rises, the baffle and the plug block are pushed upward to gradually close the liquid discharge holes.

[0008] As a further improvement of the above technical solution, the left connecting platform and the right connecting platform are symmetrically distributed left and right, and clamping grooves are respectively provided on the opposite sides of the left connecting platform and the right connecting platform. The anti-falling filter box is detachably clamped in the clamping grooves through the protrusions provided on its outer wall.

[0009] As a further improvement of the above technical solution, an anti-theft structure is further included, which also includes a rotating sleeve and a locking tongue. A rotating sleeve is movably sleeved on one side of the well cover away from the connecting arm. An anti-theft groove is provided on the upper part of the rotating sleeve. The lower part of the rotating sleeve is connected with the locking tongue. An inclined surface structure is provided on the upper side of the locking tongue. An inclined groove is opened on the inner wall of the well ring. Rotate the rotating sleeve so that the locking tongue can be clamped in the inclined groove to lock the well cover.

[0010] As a further improvement of the above technical solution, a jacking structure is further included, which includes a jacking column and an elastic member. A jacking column for jacking up the well cover upward is movably sleeved on the left connecting platform. An elastic member is connected between the upper part of the jacking column and the upper side of the left connecting platform.

[0011] As a further improvement of the above technical solution, a buffer rubber pad is further included. The buffer rubber pad is arranged at the upper end of the jacking column, and the buffer rubber pad abuts against the inner side of the closed well cover.

[0012] As a further improvement of the above technical solution, a limiting ring block is further included. The limiting ring block is arranged on the upper side of the left connecting platform and is used for limiting the closed well cover.

[0013] As a further improvement of the above technical solution, anti-slip blocks are further included. The anti-slip blocks flush with the upper end surface are distributed on the upper side of the well cover.

[0014] The beneficial effects of the present invention are as follows: Through the linkage cooperation of the plug block, connecting shaft and baffle, it can automatically adapt to the amount of rainfall and drain water normally and orderly. And when floods occur, it can automatically form a double-layer sealing structure to prevent flood backflow as the water level rises, avoiding serious water accumulation on the road surface, and thus being beneficial to improving the safety of use. And by arranging a detachable anti-falling filter box inside the well ring, it is beneficial to further improve safety. The double-layer filtering structure composed of the filter net plate and the anti-falling filter box can effectively filter out impurities in the accumulated water, avoid blockage caused by the accumulation of impurities inside the sewer pipe, and is beneficial to maintaining normal and orderly drainage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 FIG. is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 FIG. is a three-dimensional structural diagram of the anti-falling structure and the anti-backflow assembly of the present invention.

[0017] Figure 3 FIG. is a cross-sectional view of the present invention.

[0018] Figure 4 FIG. is a three-dimensional structural diagram of the rotating sleeve and the locking tongue of the present invention.

[0019] Figure 5 FIG. is a structural separation diagram of the present invention.

[0020] Figure 6 FIG. is a three-dimensional structural diagram of the well cover and the drainage structure of the present invention.

[0021] Figure 7 FIG. is a three-dimensional structural diagram of the anti-falling structure of the present invention.

[0022] Figure 8 FIG. is a structural separation diagram of the anti-falling structure of the present invention.

[0023] Figure 9 FIG. is a three-dimensional structural diagram of the jacking structure and the left connecting platform of the present invention.

[0024] Names of the reference numerals in the figures: 1, well ring; 2, well sleeve; 3, well cover; 4, connecting arm; 5, rotating sleeve; 50, anti-theft groove; 6, locking tongue; 60, inclined surface; 7, left connecting platform; 8, right connecting platform; 9, card slot; 10, anti-falling filter box; 11, protrusion; 12, connecting shaft; 13, plug block; 14, baffle; 15, connecting ring; 16, guide sleeve; 17, liquid discharge hole; 18, jacking column; 19, elastic member; 20, buffer rubber pad; 21, limiting ring block; 22, filter net plate; 30, anti-slip block; 100, inclined groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0026] Embodiment: A protective manhole cover provided by the present invention is shown in Figures 1 to 9 as follows, which includes a well ring 1, a well sleeve 2, a manhole cover 3, a connecting arm 4, an anti-falling structure and an anti-backflow assembly. The well sleeve 2 is connected to the lower part of the well ring 1, and the manhole cover 3 is rotatably connected to the upper part of the well ring 1 through the connecting arm 4. An anti-falling structure is connected between the well ring 1 and the well sleeve 2. The anti-falling structure includes a left connecting platform 7 on the inner wall of the well ring 1, a right connecting platform 8 on the inner wall of the well sleeve 2 and an anti-falling filter box 10. The anti-falling filter box 10 is detachably installed between the left connecting platform 7 and the right connecting platform 8. The anti-falling filter box 10 can effectively prevent falling in the case of accidental opening of the manhole cover 3, which is beneficial to improving safety. An anti-backflow assembly is provided between the manhole cover 3 and the anti-falling structure. The anti-backflow assembly includes a movable connecting shaft 12 vertically penetrating the center of the anti-falling filter box 10, a blocking block 13 fixed to the upper end of the connecting shaft 12 and a baffle 14 provided at the lower end of the connecting shaft 12. Among them, the connecting shaft 12 is designed with a hollow structure, and the tops of the blocking block 13 and the baffle 14 are both designed with a conical structure. Through the linkage cooperation of the connecting shaft 12, the blocking block 13 and the baffle 14, the positions of the blocking block 13 and the baffle 14 can be adaptively adjusted according to the amount of rainfall, so as to achieve the functions of rainwater collection and drainage and preventing flood backflow. The structure is simple and easy to maintain, and the manufacturing cost is relatively low, which is suitable for popularization and use to adapt to the existing complex and changeable climate environment. Moreover, through the linkage cooperation of the connecting shaft 12, the blocking block 13 and the baffle 14, a double sealing structure can also be formed, which can effectively prevent flood backflow and is beneficial to improving the safety of use.

[0027] See Figure 3 、 Figure 5 and Figure 6As shown in the figure, furthermore, the anti-backflow component further includes a drainage structure, which includes a connecting ring 15, a guide sleeve 16 and a filter screen plate 22. The filter screen plate 22 is embedded in the middle of the manhole cover 3. The bottom of the filter screen plate 22 is communicated with the connecting ring 15. The end of the connecting ring 15 is threadedly connected with the guide sleeve 16. The guide sleeve 16 is circumferentially provided with liquid discharge holes 17 communicated with the connecting ring 15 at intervals. And a plug 13 is movably sleeved in the guide sleeve 16. When the water level rises, it pushes the baffle 14 and the plug 13 to move upward to gradually close the liquid discharge holes 17. The filter screen plate 22 can play a preliminary filtering role for the impurities in the accumulated water that can be discharged, and through the anti-falling filter box 10, the impurities in the accumulated water can be filtered again. In this way, through the anti-falling filter box 10 and the filter screen plate 22, a double filtering structure can be jointly formed, which is beneficial to improving the filtering efficiency of the impurities in the accumulated water.

[0028] See Figure 2 , Figure 3 , Figure 5 , Figure 7 , Figure 8 and Figure 9 As shown in the figure, furthermore, the left connecting platform 7 and the right connecting platform 8 are symmetrically distributed, and clamping grooves 9 are respectively provided on the opposite sides of the left connecting platform 7 and the right connecting platform 8. The anti-falling filter box 10 is detachably clamped in the clamping groove 9 through the protrusions 11 provided on its outer wall, which is convenient for daily regular disassembly and maintenance of the anti-falling filter box 10 to ensure the normal use function of the anti-falling filter box 10.

[0029] See Figures 1 to 6 As shown in the figure, furthermore, it further includes an anti-theft structure, which further includes a rotating sleeve 5 and a locking tongue 6. The rotating sleeve 5 is movably sleeved on the side of the manhole cover 3 away from the connecting arm 4. The upper part of the rotating sleeve 5 is provided with an anti-theft groove 50. The lower part of the rotating sleeve 5 is connected with the locking tongue 6. The upper side of the locking tongue 6 is provided with an inclined surface 60 structure. An inclined groove 100 is opened on the inner wall of the well ring 1. Rotating the rotating sleeve 5 enables the locking tongue 6 to be clamped in the inclined groove 100 to lock the manhole cover 3, which is beneficial to improving the safety during use and avoiding accidents caused by theft of the manhole cover 3.

[0030] See Figure 9 As shown in the figure, furthermore, it further includes a jacking structure, which includes a jacking post 18 and an elastic member 19. The jacking post 18 for jacking up the manhole cover 3 is movably sleeved on the left connecting platform 7. An elastic member 19 is connected between the upper part of the jacking post 18 and the upper side of the left connecting platform 7. The elastic member 19 is a compression spring, which is used to exert an upward thrust on the opened manhole cover 3 so as to conveniently flip and open the manhole cover 3, which is convenient to use.

[0031] See Figure 2 , Figure 5 , Figure 8 and Figure 9As shown, furthermore, it further includes a buffer rubber pad 20. The buffer rubber pad 20 is arranged at the upper end of the top post 18, and the buffer rubber pad 20 abuts against the inner side of the closable manhole cover 3, which can buffer and protect the closable manhole cover 3, avoid hard contact and cause collision sounds, and can effectively protect the manhole cover 3.

[0032] In addition, referring to Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 8 and Figure 9 As shown, it further includes a limit ring block 21. The limit ring block 21 is arranged on the upper side of the left connecting platform 7. When the manhole cover 3 is turned downwards and closed, its lower end face can contact with the limit ring block 21, and the limit ring block 21 plays a limiting role on the manhole cover 3; it further includes an anti-slip block 30. The anti-slip blocks 30 are distributed on the upper side of the manhole cover 3 and are flush with its upper end face, which is beneficial to normal drainage and also plays an anti-slip role.

[0033] Since this manhole cover 3 is hinged to the well ring 1 through the connecting arm 4, and the well ring 1 and the well sleeve 2 are embedded and fixed in the ground, a structural design in which the manhole cover 3, the well ring 1 and the well sleeve 2 form an integral body is formed, which can effectively achieve the purpose of anti-theft; after the manhole cover 3 is closed, the lock tongue 6 is clamped into the inclined groove 100 on the inner wall of the well ring 1 by rotating the rotating sleeve 5, so that the manhole cover 3 can be conveniently locked, and the phenomenon of the manhole cover 3 warping or shifting during use can be effectively avoided, which is beneficial to further improving the safety during use; through the drainage structure composed of the connecting ring 15, the guide sleeve 16 and the filter screen plate 22, the normal rainwater volume can be discharged, and the phenomenon that the road surface is accumulated with water and affects the normal traffic order can be avoided; at the same time, in the double-filter protection structure composed of the filter screen plate 22 and the anti-falling filter box 10, part of the impurities can be filtered out, and the problem of blockage caused by impurities entering and gathering in the sewer can be avoided; in addition, through the plug block 13 and the cover 14 with a conical structure at the top, the water flow can be guided, and thus the noise generated by the water flow during drainage can be effectively reduced.

[0034] When the rainfall is heavy and the water inside the sewer pipe is seriously accumulated, causing flood disasters, in order to avoid the phenomenon of flood backflow, when the water level inside the water pipe gradually rises, the blocking cover 14 can drive the blocking block 13 to move up at the same time through the hollow structure of the connecting shaft 12 through the buoyancy effect. When the blocking block 13 moves up to the limit position, it can be located inside the connecting ring 15 and then block and seal the drainage hole 17 on the guide sleeve 16. At the same time, the blocking cover 14 moves up to the inside of the well casing 2 and cooperates with the well casing 2 to form a sealing structure. In this way, through the double-layer sealing structure, the flood in the sewer pipe can be effectively prevented from backflowing, which is conducive to further improving the safety during use and avoiding serious rainwater accumulation on the road. When the flood recedes, as the flood level drops, under the action of its own gravity, the blocking cover 14, the connecting shaft 12 and the blocking block 13 can be gradually moved down and reset, so that the accumulated water on the road surface can be discharged normally.

[0035] When it is necessary to open the manhole cover 3, a special tool can be used to insert it into the rotating sleeve 5 of the rotating sleeve 5 and rotate it to disengage the locking tongue 6 from the inclined groove 100. The elastic force of the elastic member 19 will push the top column 18 to move upward, so that the buffer rubber pad 20 on the top column 18 can partially lift the manhole cover 3 upward, so that the outer edge of the lower side of the manhole cover 3 can be higher than the upper edge of the well ring 1, which is conducive to flipping the manhole cover 3 upward and opening it, which is convenient for use; the detachable anti-fall filter box 10 can also prevent falling, which is conducive to further improving the safety of use.

[0036] Although the present invention is described in detail with reference to the above embodiments, it is obvious to those skilled in the art through this disclosure that various changes or modifications may be made to the present invention without departing from the principle and spirit of the present invention defined by the claims. Therefore, the detailed description of the embodiments of the present disclosure is only used to explain, not to limit the present invention, but the scope of protection is limited by the content of the claims.

Claims

1. A protective manhole cover, comprising a manhole ring (1), a manhole casing (2), a manhole cover (3) and a connecting arm (4), wherein the manhole casing (2) is connected to the lower part of the manhole ring (1), and the manhole cover (3) is rotatably connected to the upper part of the manhole ring (1) through the connecting arm (4), wherein: The invention also comprises an anti-falling structure and an anti-backflow component. The anti-falling structure is connected between the well ring (1) and the well casing (2). The anti-falling structure comprises a left connecting platform (7) arranged on the inner wall of the well ring (1), a right connecting platform (8) arranged on the inner wall of the well casing (2), and an anti-falling filter box (10). The anti-falling filter box (10) is detachably installed between the left connecting platform (7) and the right connecting platform (8). An anti-backflow component for blocking flood water is arranged between the well cover (3) and the anti-falling structure. The anti-backflow component comprises a movable connecting shaft (12) vertically penetrating the center of the anti-falling filter box (10), a blocking block (13) fixed to the upper end of the connecting shaft (12), and a blocking cover (14) arranged at the lower end of the connecting shaft (12). When the blocking cover (14) moves upward to the inner wall of the well casing (2), a sealing structure can be formed to prevent flood water from backflowing.

2. A protective manhole cover according to claim 1, characterized in that: The backflow prevention component also includes a drainage structure, which includes a connecting ring (15), a guide sleeve (16) and a filter screen plate (22). The filter screen plate (22) is embedded in the middle of the manhole cover (3). The bottom of the filter screen plate (22) is connected to the connecting ring (15). The end of the connecting ring (15) is threadedly connected to the guide sleeve (16). The guide sleeve (16) is provided with drainage holes (17) in communication with the connecting ring (15) at intervals in the circumferential direction. The blocking block (13) is movably sleeved in the guide sleeve (16). When the water level rises, the blocking cover (14) and the blocking block (13) are pushed upward to gradually close the drainage hole (17).

3. A protective manhole cover according to claim 1, characterized in that: The left connecting platform (7) and the right connecting platform (8) are symmetrically arranged on the left and right sides, and a clamping groove (9) is provided on the opposite side of the left connecting platform (7) and the right connecting platform (8), respectively, and the anti-falling filter box (10) is detachably clamped in the clamping groove (9) via a protrusion (11) provided on the outer wall thereof.

4. A protective manhole cover according to claim 1, characterized in that: The invention also comprises an anti-theft structure, which comprises a rotating sleeve (5) and a locking tongue (6); a rotating sleeve (5) is movably sleeved on a side of the manhole cover (3) away from the connecting arm (4); an anti-theft groove (50) is provided on the upper part of the rotating sleeve (5); a locking tongue (6) is connected to the lower part of the rotating sleeve (5); an inclined surface (60) structure is provided on the upper side of the locking tongue (6); an inclined groove (100) is provided on the inner wall of the manhole ring (1); the rotating sleeve (5) is rotated so that the locking tongue (6) can be engaged in the inclined groove (100) for locking the manhole cover (3).

5. A protective manhole cover according to claim 3, characterized in that: It also includes a lifting structure, which includes a lifting column (18) and an elastic member (19). The left connecting platform (7) is movably sleeved with a lifting column (18) for lifting the manhole cover (3) upwards, and an elastic member (19) is connected between the upper part of the lifting column (18) and the upper side of the left connecting platform (7).

6. A protective manhole cover according to claim 5, characterized in that: It also includes a buffer rubber pad (20), which is arranged on the upper end of the top column (18), and the buffer rubber pad (20) abuts against the inner side of the closed manhole cover (3).

7. A protective manhole cover according to claim 3, characterized in that: It also comprises a limiting ring block (21), which is arranged on the upper side of the left connecting platform (7) and is used to limit the closed manhole cover (3).

8. A protective manhole cover according to claim 1, characterized in that: It also includes an anti-sliding block (30), and the upper side surface of the manhole cover (3) is provided with an anti-sliding block (30) that is flush with the upper end surface thereof.

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