Novel well lid

Abstract

The utility model relates to the technical field of inspection well covers, in particular to a novel well cover. Comprising a base of an annular structure, a well lid outer ring and an inner cover plate, and the lower surface of the well lid outer ring is connected with a connecting rod; the upper end of the connecting rod is detachably connected with the connecting rod; the connecting rod is detachably connected with the well lid outer ring, and when the well lid outer ring is connected with the base, only the well lid outer ring needs to be placed on the base, and then the upper end of the connecting rod penetrates through the penetrating hole in the base and is connected with the well lid outer ring. When the well lid outer ring and the base are detached, only the upper end of the connecting rod needs to be detached from the well lid outer ring, and then the well lid outer ring is moved out of the base. When the manhole cover outer ring and the base are mounted or dismounted, the manhole cover outer ring does not need to be horizontally descended or ascended, so that the operation difficulty and time consumption are reduced; after being manufactured, the well lid outer ring and the connecting rods can be packaged and transported respectively, the occupied space is smaller, and packaging and transportation are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of manhole covers, in particular to a new type of manhole cover. Background Art

[0002] There are many underground channels for sewage discharge or various pipelines to pass through under the city ground. An exit leading to the ground needs to be set at a certain distance for each of these underground channels. The section from the underground channel to the ground is the manhole, and the manhole cover is used to cover the manhole opening.

[0003] In the prior art, the patent number CN202020871174.6 discloses a flood-discharging and anti-falling automatic reset manhole cover, which includes a base with an annular structure and a manhole cover with a disc-shaped structure; the manhole cover includes an outer manhole cover ring and an inner cover plate; the outer manhole cover ring is integrally in an annular structure, and the inner side of the upper surface of the outer manhole cover ring has a first stepped hole in an annular shape for the inner cover plate to cover and fall into, and a detachable fixed connection is formed between the first stepped hole and the inner cover plate through a snap structure; the inner side of the upper surface of the base has a second stepped hole in an annular shape for the whole outer manhole cover ring to fall into, and a vertical connecting rod is fixedly arranged on the lower surface of the outer manhole cover ring. The connecting rod passes through a perforation on the stepped surface of the second stepped hole and extends to the lower part of the base, and a limiting part with an outer diameter larger than the perforation is fixedly connected to the lower end of the connecting rod; and at least two connecting rods are arranged at intervals around the circumferential direction of the outer manhole cover ring. The flood-discharging and anti-falling automatic reset manhole cover can discharge flood and can automatically reset to prevent falling. When the water volume in the pipe network is overloaded, the hydraulic force in the pipe network will press and open the manhole cover (the outer manhole cover ring and the inner cover plate) to discharge flood; and due to the structure of the connecting rod and the snap structure, the manhole cover (the outer manhole cover ring and the inner cover plate) can only rise axially to the highest point on the base to fully discharge flood; when the water volume in the pipe network returns to normal, the manhole cover (the outer manhole cover ring and the inner cover plate) will quickly fall into the base to cover and reset under its own gravity and under the guiding cooperation of the connecting rod and the perforation, and re-achieve the sealing of the manhole opening, so as to realize automatic reset and anti-falling in a timely and effective manner, and effectively ensure the safety of pedestrians and vehicle driving.

[0004] However, the above patent has the following disadvantages in actual application: Since the connecting rod is fixedly connected to the lower surface of the outer manhole cover ring, when connecting the outer manhole cover ring and the base, the outer manhole cover ring needs to be kept horizontal and placed above the base, and the connecting rod on the outer manhole cover ring needs to be aligned with the perforation on the base and then lowered horizontally. When disassembling the outer manhole cover ring and the base, a horizontal rising operation needs to be performed on the outer manhole cover ring. Since the outer manhole cover ring is generally relatively heavy, it is difficult for a single worker to perform the horizontal lowering or horizontal rising operation on the outer manhole cover ring. Multiple workers need to cooperate with each other or use other tools to connect or disassemble the outer manhole cover ring and the base, resulting in large installation difficulty and long time consumption; and manufacturing the outer manhole cover ring and the connecting rod on it requires a large amount of space, which is not convenient for packaging and transportation.

[0005] Based on this, the applicant considered designing a new type of manhole cover that is convenient for installation and removal. Content of the Utility Model

[0006] Aiming at the deficiencies of the above-mentioned prior art, the technical problem to be solved by the present utility model is: how to provide a new type of manhole cover that is convenient for installation and removal.

[0007] To solve the above technical problem, the present utility model adopts the following technical solutions:

[0008] A new type of manhole cover includes a base with an annular structure, an outer manhole cover ring, and an inner cover plate. At least two vertical connecting rods are connected to the lower surface of the outer manhole cover ring. The connecting rods pass through through-holes on the base, and a limiting member with an outer diameter larger than the through-holes is fixedly connected to the lower end of the connecting rods; the upper end of the connecting rods is detachably connected to the connecting rods.

[0009] The working principle and advantages of a new type of manhole cover in this technical solution are as follows:

[0010] The connecting rods and the outer manhole cover ring are detachably connected. When connecting the outer manhole cover ring and the base, it is only necessary to place the outer manhole cover ring on the base, and then pass the upper end of the connecting rod through the through-hole on the base and connect it to the outer manhole cover ring; when disassembling the outer manhole cover ring and the base, it is only necessary to disassemble the upper end of the connecting rod from the outer manhole cover ring and then remove the outer manhole cover ring from the base; when installing or disassembling the outer manhole cover ring and the base, there is no need to perform operations such as horizontally lowering or raising the outer manhole cover ring, reducing the dependence on multiple workers or tools, and reducing the operation difficulty and time consumption; after the outer manhole cover ring and the connecting rods are manufactured, they can be packaged and transported separately, occupying less space and being convenient for packaging and transportation.

[0011] Furthermore, the outer manhole cover ring is detachably connected to the inner cover plate. The inner side of the upper surface of the outer manhole cover ring has a first stepped hole that is annular and into which the inner cover plate can be covered and dropped. At least two positioning pins that are spaced apart and protrude radially inward are detachably connected to the inner side wall of the first stepped hole above the stepped surface. At least two positioning holes corresponding to the positioning pins are recessed on the outer side surface in the radial direction of the inner cover plate.

[0012] Furthermore, at least two connecting components are provided on the outer manhole cover ring. Each connecting component includes an installation groove opened on the top side of the outer manhole cover ring and a connecting block movably arranged therein; a first through-hole for the upper end of the connecting rod to extend into is opened at the bottom of each installation groove, a second threaded hole is opened at the bottom side of the connecting block, and the upper end of the connecting rod is a connecting stud threadedly connected to the second threaded hole.

[0013] Furthermore, each of the connecting components includes a cover arranged to cover the installation slot, a sinking hole for the connecting bolt stud to pass through is opened on the top side of the cover, and a first threaded hole threadedly connected to the connecting bolt stud is opened on the top side of the connecting block.

[0014] Furthermore, the side walls of the mounting groove are each provided with a second through hole connected to the inner side wall above the step surface on the first step hole, and the connecting block is each provided with a corresponding hole aligned with the second through hole, and the positioning pin passes through the corresponding hole and the second through hole.

[0015] Furthermore, the cover is fixedly connected to a limit block extending into the mounting groove, the connecting block is located between the limit block and the second through hole, and the limit block blocks the corresponding hole on the connecting block to limit the lateral movement of the positioning pin.

[0016] Furthermore, an extension disk is fixedly connected to one end of the positioning pin away from the second through hole, and an outer diameter of the extension disk is larger than that of the corresponding hole.

[0017] Furthermore, a first alignment mark is provided on the top side of the outer ring of the manhole cover, and a second alignment mark is provided on the top side of the inner cover plate. When the first alignment mark is aligned with the second alignment mark, the second through hole is aligned with the positioning hole.

[0018] Furthermore, the inner side of the upper surface of the base has a second step hole in the shape of an annular ring into which the outer ring of the manhole cover can fall as a whole, and the through hole is opened on the step surface of the second step hole.

[0019] Furthermore, the limiting member is a limiting plate detachably connected to the lower end of the connecting rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of the new manhole cover in the embodiment of the utility model Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the three-dimensional structure of the new manhole cover in the embodiment of the utility model Figure 2 ;

[0022] Figure 3 This is a schematic diagram of the top view of the new manhole cover according to an embodiment of the present utility model;

[0023] Figure 4 This is a schematic diagram of the front cross-sectional structure of a new manhole cover according to an embodiment of the present utility model;

[0024] Figure 5 for Figure 4 A magnified schematic diagram of point A in the middle;

[0025] Figure 6 Schematic three-dimensional structure diagram of the cover in the embodiment of the present utility model;

[0026] Figure 7 Schematic three-dimensional structure diagram of the connecting block and the positioning pin in the embodiment of the present utility model;

[0027] In the above-mentioned drawings:

[0028] 1. Base; 11. Perforation; 12. Second stepped hole;

[0029] 2. Outer ring of manhole cover; 21. Installation groove; 22. First through hole; 23. Second through hole; 24. First alignment mark; 25. First stepped hole;

[0030] 3. Inner cover plate; 31. Positioning hole; 32. Second alignment mark;

[0031] 41. Cover; 411. Limiting block; 412. Sinking hole; 413. Connecting bolt; 42. Connecting block; 421. First threaded hole; 422. Second threaded hole; 423. Corresponding hole; 43. Positioning pin; 431. Extension plate;

[0032] 5. Connecting rod; 51. Connecting stud; 52. Limiting plate. Detailed implementation manners

[0033] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0034] With reference to Figures 1 to 7 , this embodiment provides a new type of manhole cover, including a base 1 with an annular structure, an outer ring 2 of the manhole cover, and an inner cover plate 3. At least two vertical connecting rods 5 are connected to the lower surface of the outer ring 2 of the manhole cover. The connecting rods 5 pass through the perforations 11 on the base 1, and a limiting member with an outer diameter larger than the perforations 11 is fixedly connected to the lower end of the connecting rods 5; the upper ends of the connecting rods 5 are detachably connected to the connecting rods 5.

[0035] In this embodiment, the connecting rod 5 and the outer ring 2 of the manhole cover are detachably connected. When connecting the outer ring 2 of the manhole cover and the base 1, it is only necessary to place the outer ring 2 of the manhole cover on the base 1, and then pass the upper end of the connecting rod 5 through the through hole 11 on the base 1 and connect it to the outer ring 2 of the manhole cover; when disassembling the outer ring 2 of the manhole cover and the base 1, it is only necessary to disassemble the upper end of the connecting rod 5 from the outer ring 2 of the manhole cover, and then remove the outer ring 2 of the manhole cover from the base 1; when installing or disassembling the outer ring 2 of the manhole cover and the base 1, there is no need to perform the operation of horizontally lowering or raising the outer ring 2 of the manhole cover, reducing the dependence on multiple workers or tools, and reducing the operation difficulty and time consumption; after the outer ring 2 of the manhole cover and the connecting rod 5 are manufactured, they can be packaged and transported separately, occupying less space and being convenient for packaging and transportation.

[0036] Preferably, as Figures 1 to 5 shown, the outer ring 2 of the manhole cover and the inner cover plate 3 are detachably connected. The inner side of the upper surface of the outer ring 2 of the manhole cover has a first stepped hole 25 that is annular and can accommodate the inner cover plate 3 to cover and fall into. At least two positioning pins 43 that are spaced apart and protrude radially inward are detachably connected to the inner side wall of the first stepped hole 25 above the stepped surface. At least two positioning holes 31 corresponding to the positioning pins 43 are recessed on the outer side surface in the radial direction of the inner cover plate 3; during the flood discharge process, the water flow is unstable, and the water flow will exert forces in different directions and with different intensities on the inner cover plate 3. If a snap-fit structure is used between the outer ring 2 of the manhole cover and the inner cover plate 3, there is still a risk of displacement or detachment of the inner cover plate 3 during the flood discharge process, and the detachment of the inner cover plate 3 will pose a safety hazard to pedestrians or facilities on the road; the above-mentioned first stepped hole 25 provides a space for the inner cover plate 3 to cover. At least two positioning pins 43 that are spaced apart and protrude radially inward are detachably connected to the inner side wall of the first stepped hole 25 above the stepped surface. At least two positioning holes 31 corresponding to the positioning pins 43 are recessed on the outer side surface in the radial direction of the inner cover plate 3; when multiple positioning pins 43 are respectively inserted into multiple positioning holes 31, the inner cover plate 3 can be stably installed in the outer ring 2 of the manhole cover, preventing safety hazards caused by the displacement or detachment of the inner cover plate 3.

[0037] Preferably, as Figures 1 to 5As shown, at least two connecting components are provided on the outer ring 2 of the manhole cover. Each connecting component includes an installation groove 21 opened on the top side of the outer ring 2 of the manhole cover and a connecting block 42 movably arranged therein; a first through hole 22 for the upper end of the connecting rod 5 to extend into is opened at the bottom of each installation groove 21, and a second threaded hole 422 is opened on the bottom side of the connecting block 42. The upper end of the connecting rod 5 is a connecting stud 51 threadedly connected to the second threaded hole 422. When the connecting rod 5 is connected to the outer ring 2 of the manhole cover, the connecting stud 51 at its upper end is passed through the first through hole 22 at the bottom of the installation groove 21, and then the connecting stud 51 is threadedly connected to the second threaded hole 422 on the connecting block 42, so as to realize the detachable connection between the connecting rod 5 and the outer ring 2 of the manhole cover, and multiple connecting components are respectively used in cooperation with multiple connecting rods 5 one by one.

[0038] Preferably, as Figures 1 to 6 shown, each connecting component includes a cover 41 arranged to cover the installation groove 21. A sunken hole 412 for the stud of the connecting bolt 413 to pass through is opened on the top side of the cover 41, and a first threaded hole 421 threadedly connected to the stud of the connecting bolt 413 is opened on the top side of the connecting block 42; the cover 41 is detachably connected to the connecting block 42 through the connecting stud 51 in its sunken hole 412, and the installation groove 21 is covered by the cover 41 to protect the components in the installation groove 21 therein.

[0039] Preferably, as Figures 1 to 7 shown, second through holes 23 communicating with the inner side wall above the upper step surface of the first stepped hole 25 are opened on the side walls of the installation groove 21, corresponding holes 423 aligned with the second through holes 23 are opened on the connecting blocks 42, and the positioning pins 43 pass through the corresponding holes 423 and the second through holes 23 together; when the positioning pins 43 are installed, they first pass through the corresponding holes 423 and the second through holes 23 together, and then extend into the positioning holes 31 on the inner cover plate 3, so as to connect the outer ring 2 of the manhole cover and the inner cover plate 3 together. When the positioning pins 43 are disassembled, only the positioning pins 43 need to be pulled out from the positioning holes 31, the second through holes 23 and the corresponding holes 423, and the installation and disassembly are convenient; at the same time, when the positioning pins 43 pass through the corresponding holes 423 and the second through holes 23 together, the positioning pins 43 can limit the up and down movement of the connecting block 42, so that the connecting block 42 and the cover 41 thereon can be stably placed in the installation groove 21.

[0040] Preferably, as Figures 4 to 6 shown, a limiting block 411 extending into the installation groove 21 is fixedly connected to each cover 41. The connecting block 42 is located between the limiting block 411 and the second through hole 23 shown, and the limiting block 411 blocks the corresponding hole 423 on the connecting block 42 to limit the lateral movement of the positioning pin 43; the limiting block 411 extending into the installation groove 21 on the cover 41 blocks the corresponding hole 423 on the connecting block 42 to limit the lateral movement of the positioning pin 43, so that the positioning pin 43 remains in the state of extending into the positioning hole 31, which is stable and reliable.

[0041] Preferably, as Figure 7 shown, one end of the positioning pin 43 away from the second through hole 23 is fixedly connected with an extension plate 431, and the outer diameter of the extension plate 431 is larger than the corresponding hole 423; the extension plate 431 with an outer diameter larger than the corresponding hole 423 is located outside the corresponding hole 423 after the positioning pin 43 extends into the corresponding hole 423, which facilitates the removal of the positioning pin 43 from the corresponding hole 423.

[0042] Preferably, as Figures 1 to 3 shown, a first alignment mark 24 is provided on the top side of the outer ring 2 of the manhole cover, and a second alignment mark 32 is provided on the top side of the inner cover plate 3. When the first alignment mark 24 is aligned with the second alignment mark 32, the second through hole 23 is aligned with the positioning hole 31; through the first alignment mark 24 and the second alignment mark 32, it is convenient for the operator to directly observe from the top side whether the second through hole 23 is aligned with the positioning hole 31 during installation, which facilitates the installation of the inner cover plate 3; specifically, the above-mentioned first alignment mark 24 and the second alignment mark 32 are arrow-shaped convex plates protruding from the surface.

[0043] Preferably, as Figures 1 to 3 shown, the inner side of the upper surface of the base 1 has a second stepped hole 12 in a ring shape for the whole outer ring 2 of the manhole cover to fall into, and the through hole 11 is opened on the step surface of the second stepped hole 12; the second stepped hole 12 on the base 1 can receive the outer ring 2 of the manhole cover therein; specifically, compared with the patent in the background art, the through hole 11 in this solution is closer to the axis of the base 1, and for the base 1 already installed on the road, the staff can more conveniently take the connecting rod 5 and pass it through the through hole 11 on the base 1 from below the hollow part of the first stepped hole 25.

[0044] Preferably, as Figure 2 and Figure 4 shown, the limiting member is a limiting plate 52 detachably connected to the lower end of the connecting rod 5; a threaded hole (not shown in the figure) is provided on the bottom side of the connecting rod 5, and a stud (not shown in the figure) threadedly connected to the threaded hole is provided on the top side of the limiting plate 52, so as to realize the detachable connection between the limiting plate 52 and the connecting rod 5. Of course, the limiting plate 52 can be detachably connected to the connecting rod 5 in other ways, or the limiting plate 52 can be welded to the connecting rod 5.

[0045] Specifically, as Figures 1 to 5 shown, there are four corresponding sets of the above-mentioned connecting rod 5, through hole 11 and connecting components.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A new type of manhole cover, comprising a base with an annular structure, an outer cover of the manhole cover, and an inner cover plate. At least two vertical connecting rods are connected to the lower surface of the outer cover of the manhole cover. The connecting rods penetrate through the perforations on the base, and a limiting member with an outer diameter larger than the perforations is fixedly connected to the lower ends of the connecting rods; it is characterized in that, The upper end of the connecting rod is detachably connected to the connecting rod.

2. A new type of manhole cover as described in claim 1, characterized in that, The outer ring of the manhole cover is detachably connected to the inner cover plate, and the inner side of the upper surface of the outer ring of the manhole cover has a first step hole in the shape of an annular ring for the inner cover plate to fall into. The inner side wall of the first step hole located above the step surface is detachably connected with at least two positioning pins that are arranged at intervals and protrude radially inward, and the radial outer side surface of the inner cover plate is recessed with at least two positioning holes corresponding to the positioning pins.

3. A new type of manhole cover according to claim 2, characterized in that, At least two connecting parts are provided on the outer ring of the manhole cover, and each of the connecting parts includes a mounting groove opened on the top side of the outer ring of the manhole cover and a connecting block movably arranged therein; a first through hole for the upper end of the connecting rod to extend into is opened at the bottom of the mounting groove, and a second threaded hole is opened on the bottom side of the connecting block, and the upper end of the connecting rod is a connecting stud threadedly connected to the second threaded hole.

4. The novel manhole cover according to claim 3, characterized in that, Each of the connecting components includes a cover arranged to cover the installation slot, a sinking hole for a connecting bolt to pass through is provided on the top side of the cover, and a first threaded hole threadedly connected to the connecting bolt is provided on the top side of the connecting block.

5. A novel manhole cover according to claim 4, characterized in that, The side walls of the mounting groove are each provided with a second through hole connected to the inner side wall above the step surface on the first step hole, and the connecting block is each provided with a corresponding hole aligned with the second through hole, and the positioning pin passes through the corresponding hole and the second through hole.

6. A novel manhole cover according to claim 5, characterized in that, The cover is fixedly connected to a limit block extending into the mounting groove, the connecting block is located between the limit block and the second through hole, and the limit block blocks the corresponding hole on the connecting block to limit the lateral movement of the positioning pin.

7. A new type of manhole cover according to claim 5, characterized in that, An extension disk is fixedly connected to one end of the positioning pin away from the second through hole, and the outer diameter of the extension disk is larger than that of the corresponding hole.

8. A novel manhole cover as claimed in claim 5, characterized in that, A first alignment mark is provided on the top side of the outer ring of the manhole cover, and a second alignment mark is provided on the top side of the inner cover plate. When the first alignment mark is aligned with the second alignment mark, the second through hole is aligned with the positioning hole.

9. A novel manhole cover as claimed in claim 1, characterized in that, The inner side of the upper surface of the base is provided with a second step hole in the shape of an annulus into which the outer ring of the manhole cover can fall as a whole, and the through hole is provided on the step surface of the second step hole.

10. A novel manhole cover as claimed in claim 1, characterized in that, The limiting member is a limiting plate detachably connected to the lower end of the connecting rod.

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