Invisible well lid

Abstract

An invisible well lid belongs to the technical field of well lids and comprises a pulling part arranged on a bearing plate, a through hole is formed in the pulling part, and a plugging part is detachably arranged in the through hole. When the bottom frame and the well lid body need to be separated, the plugging part is taken out of the through hole, then other auxiliary devices are inserted into the through hole, the bottom frame and the well lid body are separated, meanwhile, after the well lid body is placed in the bottom frame, the plugging part is installed in the through hole, and the situation that the through hole is plugged by dust and other impurities, and consequently the well lid body cannot be opened is avoided; and no dust or other impurities enter the through hole, so that other auxiliary devices can be conveniently inserted into the through hole.

Description

Technical Field

[0001] The present application belongs to the technical field of manhole covers, and in particular to invisible manhole covers. Background Art

[0002] Manhole covers are used to cover deep wells on roads or in homes to prevent people or objects from falling. According to the material, they can be divided into metal manhole covers, high-strength fiber cement concrete manhole covers, resin manhole covers, etc. They are generally round and can be used in green belts, sidewalks, motor vehicle lanes and other places. As people's requirements for the aesthetics of roads gradually increase, more and more hidden manhole covers are developed and put into use. This not only increases the aesthetics of the road, but also improves the comfort of people when driving and walking on the road.

[0003] However, during the use of existing invisible manhole covers, it was found that the manhole covers have poor integration with the use environment, poor quality workmanship, great difficulty in processing and construction, and difficulty in opening and closing. The reset effect after closing is poor, especially when the manhole cover is inspected or opened to check the shaft, external force is required to open the manhole cover. After multiple openings, the opening holes on the manhole cover are prone to deformation and even cause the manhole cover to break and cannot be reset normally, which can easily trip pedestrians and cause damage to vehicles, and the cost of maintenance and replacement is high.

[0004] For example, the invention patent with the publication number of "CN217267657U" discloses an invisible manhole cover assembly, including a bottom frame and a manhole cover body embedded in the bottom frame; a bearing plate is arranged at the bottom of the inner wall of the bottom frame, the manhole cover body includes a manhole cover tray, and invisible manhole cover opening auxiliary lifting mechanisms are arranged on the left and right sides of the manhole cover tray, and the invisible manhole cover opening auxiliary lifting mechanism includes a shell, the top of the shell is provided with an opening hole, the bottom end of the shell is connected with a sewage system, and the bottom end of the sewage system passes through the bottom of the manhole cover tray and the bearing plate arrangement; a fixing hole is arranged on the side where the shell and the manhole cover tray are attached, and reinforcing ribs are welded inside the manhole cover tray, a commercial concrete filling layer is arranged on the top of the reinforcing ribs, a laying layer is arranged on the top of the commercial concrete filling layer, and notches are arranged on both sides of the laying layer, and the notches are nested on the outside of the invisible manhole cover opening auxiliary lifting mechanism; the utility model has beautiful appearance, is easy to open and close in a cycle, has low cost of later operation and maintenance, and can reduce economic losses.

[0005] Although the above invention patent solves the problems of poor integration of the manhole cover and the use environment, difficulty in opening and closing, and poor resetting effect after closing, it ignores the problem that the opening hole is easily blocked during use. As a result, there is no leverage point when opening the manhole cover, resulting in the manhole cover being unable to be opened. Summary of the invention

[0006] In view of this, it is necessary to provide a method for solving the problem that the manhole cover cannot be opened due to the blockage of the opening hole.

[0007] The solution of this application to solve the technical problem is:

[0008] An invisible manhole cover, comprising a bottom frame and a manhole cover body embedded in the bottom frame, wherein a bearing plate is arranged at the bottom of the inner wall of the bottom frame, the plate surface of the bearing plate carries the manhole cover body, and further comprising a pulling portion, wherein the pulling portion is fixedly arranged in the manhole cover body, and the upper surface of the pulling portion is flush with the upper surface of the manhole cover body, and the pulling portion is provided with a mounting hole; and

[0009] A blocking portion is disposed in the mounting hole and is used to block the mounting hole, and the blocking portion is flush with an upper surface of the pulling portion.

[0010] Preferably, the blocking portion is a bolt, and the mounting hole is a bolt hole.

[0011] Preferably, the blocking portion includes a push-to-telescopic part, which is arranged in the mounting hole. The push-to-telescopic part can be telescopic between a first position and a second position. In the first position, the push-to-telescopic part is located in the mounting hole, and in the second position, the push-to-telescopic part is at least partially located outside the mounting hole.

[0012] Preferably, the push-to-telescopic part includes a cylinder, a connecting rod and a pull rod, the cylinder is fixedly connected to the mounting hole, and a limiting groove is arranged on the top of the cylinder, the connecting rod is arranged in the cylinder, a spring is arranged between the cylinder and the connecting rod, the two ends of the spring respectively resist one end of the cylinder and the connecting rod, a telescopic locking mechanism is arranged between the other end of the connecting rod and the pull rod, and the pull rod is slidably matched with the limiting groove, part of the pull rod can be extended out of the cylinder, and the telescopic locking mechanism is located in the cylinder and can move up and down along the cylinder.

[0013] Preferably, a transverse through hole is provided at the upper end of the pull rod.

[0014] Preferably, the sealing portion also includes a covering plate, the mounting hole is a step hole, the covering plate can cover the step hole, in the first position, the covering plate covers the step hole for sealing the step hole, the covering plate is flush with the upper surface of the pulling portion, and the pressing and telescopic part is located in the step hole and under the covering plate.

[0015] Preferably, the mounting hole is provided with a lever notch, and the lever notch is arranged at the upper end of the mounting hole and is located close to one end of the covering plate.

[0016] Beneficial effects: The present application discloses an invisible manhole cover, comprising a pulling portion arranged on a bearing plate, and a mounting hole is provided on the pulling portion, and a blocking portion is detachably provided in the mounting hole. When the bottom frame and the manhole cover body need to be separated, the blocking portion is taken out from the mounting hole, and then other auxiliary devices are inserted into the mounting hole, the bottom frame and the manhole cover body are separated, and the manhole cover body is placed in the bottom frame, and then the blocking portion is installed in the mounting hole, so as to prevent dust and other impurities from clogging the mounting hole, thereby making it impossible to open the manhole cover body, and since there is no dust and other impurities entering the mounting hole, it is easier to insert a crowbar or other tools into the mounting hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a diagram of the installation of the invisible manhole cover in this application;

[0018] Figure 2 A schematic diagram of a cover board in this application;

[0019] Figure 3 This is a schematic diagram of the structure of the pressing and retracting member in this application;

[0020] Figure 4 It is a schematic diagram of the cooperation between the covering plate and the mounting hole in the present application.

[0021] In the figure: a bottom frame 10, a bearing plate 110, a manhole cover body 20, a pulling portion 30, a mounting hole 310, a lever notch 311, a blocking portion 40, a pressing and telescopic member 410, a cylinder 411, a connecting rod 412, a pulling rod 413, a through hole 414, and a covering plate 50. DETAILED DESCRIPTION

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Please see Figures 1 to 4 , an invisible manhole cover, comprising a bottom frame 10 and a manhole cover body 20 embedded in the bottom frame 10, wherein a bearing plate 110 is provided at the bottom of the inner wall of the bottom frame 10, and the plate surface of the bearing plate 110 carries the manhole cover body 20, and further comprising a pulling portion 30, wherein the pulling portion 30 is fixedly disposed in the manhole cover body 20, and the upper surface of the pulling portion 30 is flush with the upper surface of the manhole cover body 20, and the pulling portion 30 is provided with a mounting hole 310; and

[0024] The blocking portion 40 is disposed in the mounting hole 310 to block the mounting hole 310 , and the blocking portion 40 is flush with the upper surface of the pulling portion 30 .

[0025] The bottom frame 10 is fixedly connected to the ground, and the bearing plate 110 is used to support the manhole cover body 20. At this time, the manhole cover body 20 and the ground can be set to the same color to make the manhole cover body 20 invisible. When it is necessary to separate the manhole cover body 20 from the bottom frame 10, the blocking portion 40 in the mounting hole 310 on the pulling portion 30 is removed, and the mounting hole 310 opened on the pulling portion 30 will be exposed. At this time, the relevant staff will put a crowbar or other tools into the mounting hole 310 and then remove the manhole cover body 20; after the manhole cover body 20 is reset, the blocking portion 40 is installed back into the mounting hole 310 to avoid dust and other impurities blocking the mounting hole 310, resulting in no leverage point when taking out the manhole cover body 20 (because the manhole cover body 20 is installed in the bottom frame 10 and fits the edge of the bottom frame 10, there is no leverage point to take out the manhole cover body 20), and the manhole cover body 20 cannot be taken out, and because there is no dust and other impurities entering the mounting hole 310, it is easier to insert a crowbar or other tools.

[0026] Since the mounting hole 310 is arranged on the manhole cover body 20 and is integrated with the manhole cover body 20, when a crowbar or other tool is inserted into the mounting hole 310, it actually provides a handle for removing the manhole cover body 20, making it easier to remove the manhole cover body 20.

[0027] At the same time, when the blocking portion 40 is installed in the mounting hole 310, it is flush with the manhole cover body 20 or slightly lower than the manhole cover body 20. At this time, there will be no problem of easily tripping pedestrians and causing harm to vehicles. Moreover, since the blocking portion 40 is flush with or slightly lower than the manhole cover body 20, the blocking portion 40 is better integrated with the manhole cover body 20, so that it can achieve the purpose of invisibility.

[0028] Specifically, the blocking portion 40 is a bolt, and the mounting hole 310 is a bolt hole.

[0029] When in use, in order to facilitate the blocking of the mounting hole 310, the blocking portion 40 is set as a bolt, and a thread is set on the bolt. The thread matches the diameter of the mounting hole 310, and the bolt can be a countersunk bolt (standard part). When the bolt needs to be taken out from the mounting hole 310, the bolt is rotated; at the same time, when the bolt needs to be installed into the mounting hole 310, the bolt is rotated in the opposite direction to block the mounting hole 310; dust and other impurities are prevented from entering the mounting hole 310, causing the mounting hole 310 to be blocked, and then there is a situation where there is no leverage point when moving the manhole cover body 20.

[0030] In a preferred embodiment, the blocking portion 40 includes a push-to-telescopic member 410, which is disposed in the mounting hole 310. The push-to-telescopic member 410 can be telescopic between a first position and a second position. In the first position, the push-to-telescopic member 410 is located in the mounting hole 310, and in the second position, the push-to-telescopic member 410 is at least partially located outside the mounting hole 310.

[0031] The sealing portion 40 is set as a bolt. Although it is convenient to use, the material of the bolt must be considered. If the material of the bolt is ordinary carbon steel, it will rust after a long time of use, resulting in the bolt being unable to be removed from the mounting hole 310. If stainless steel is used, although it will not rust, it will cause thread slippage during use, resulting in difficulty in removing the bolt. If the material of the bolt is plastic, the plastic will oxidize and decompose in the process of wind and sun, causing its color to fade, become brittle, deform and crack easily, causing the bolt to lose its function. Therefore, in order to avoid this situation, a screw thread is set in the mounting hole 310. When the push-telescopic part 410 is in use, a corresponding tool is used to press the push-telescopic part 410, and the push-telescopic part 410 is extended from the mounting hole 310 (the push-telescopic part 410 is higher than the manhole cover body 20). At this time, the staff grabs the extended push-telescopic part 410 and moves the manhole cover body 20. After use, the push-telescopic part 410 is pressed to shrink the push-telescopic part 410 into the mounting hole 310 (the push-telescopic part 410 is slightly lower than the manhole cover body 20 to avoid pressing the push-telescopic part 410 when pedestrians are walking or vehicles are passing by).

[0032] Usage process: When the manhole cover body 20 is located in the bottom frame 10, the push-telescopic part 410 is located in the first position, and the push-telescopic part 410 is lower than or parallel to the upper end surface of the manhole cover body 20; when the manhole cover body 20 needs to be removed from the bottom frame 10, the push-telescopic part 410 is pressed, and part of the push-telescopic part 410 extends out of the mounting hole 310. At this time, the staff moves the manhole cover body 20 with the help of the extended push-telescopic part 410.

[0033] At the same time, the push-telescopic part 410 only needs to move up and down when in use, and is integrated with the manhole cover body 20. There is no need to take out the push-telescopic part 410 when in use, which avoids slippage when rotating, and there is no need to worry about the push-telescopic part 410 being lost; the push-telescopic part 410 is easy to operate and only needs to be pressed, which is more convenient, and the push-telescopic part 410 requires corresponding tools to press the push-telescopic part 410, which avoids malicious damage by other idlers.

[0034] In a specific implementation scheme, the push-to-telescopic member 410 includes a cylinder 411, a connecting rod 412 and a pull rod 413. The cylinder 411 is fixedly connected to the mounting hole 310, and a limiting groove is arranged at the top of the cylinder 411. The connecting rod 412 is arranged in the cylinder 411. A spring is arranged between the cylinder 411 and the connecting rod 412. The two ends of the spring respectively resist one end of the cylinder 411 and the connecting rod 412. A telescopic locking mechanism is arranged between the other end of the connecting rod 412 and the pull rod 413, and the pull rod 413 is slidably matched with the limiting groove. Part of the pull rod 413 can extend out of the cylinder 411, and the telescopic locking mechanism is located in the cylinder 411 and can move up and down along the cylinder 411.

[0035] The cylinder 411 fixing rod is installed in the mounting hole 310, that is, the mounting hole 310 and the manhole cover body 20 are an integrated structure, and the connecting rod 412 and the cylinder 411 are used to complete the extension and contraction of the pull rod 413. The pull rod 413 provides a lever point for moving the manhole cover body 20, that is, the staff can move the manhole cover body 20 by grasping the pull rod 413; at this time, the pressing principle of the pressing telescopic part 410 is similar to the double gear pressing principle inside a ballpoint pen, one press to release, two presses to retract, thereby realizing the extension and contraction of the pull rod 413.

[0036] In a preferred embodiment, a transverse through hole 414 is formed at the upper end of the pull rod 413 .

[0037] When the pull rod 413 is used to move the manhole cover body 20, since the connecting rod 412 is a vertical rod, it is difficult to exert force when moving the manhole cover body 20. For this reason, a transverse through hole 414 is opened on the pull rod 413. After the pull rod 413 is extended from the mounting hole 310, the staff inserts the rod (the diameter of the rod is smaller than the diameter of the through hole 414, and the strength of the rod must be sufficient to avoid the rod from breaking under the weight of the manhole cover body 20 due to insufficient strength of the rod) into the through hole 414. At this time, the staff only needs to grab the rod to move the manhole cover body 20.

[0038] Furthermore, the sealing portion 40 also includes a covering plate 50, and the mounting hole 310 is a step hole. The covering plate 50 can cover the step hole. In the first position, the covering plate 50 covers the step hole to seal the step hole. The covering plate 50 is flush with the upper surface of the pulling portion 30, and the pressing and retractable member 410 is located in the step hole and under the covering plate 50.

[0039] Although the push-telescopic member 410 uses an up-and-down movement to provide a lever point for the manhole cover body 20 to move, in order to prevent dust from entering the push-telescopic member 410, the push-telescopic member 410 may get stuck in the presence of dust when the push-telescopic member 410 is used. Therefore, the covering plate 50 is provided, and the covering plate 50 and the mounting hole 310 (in order to prevent the covering plate 50 from being placed in the mounting hole 310 and falling down along the mounting hole 310, pressing the push-telescopic member 410, at this time, The size of the mounting hole 310 (set as a step hole) matches that of the step hole and can be integrated with the manhole cover body 20. When in use, first take out the covering plate 50, and then press the push-telescopic part 410. After use, cover the covering plate 50 on the manhole cover body 20 to make the mounting hole 310 for installing the push-telescopic part 410 a relatively sealed space, thereby blocking most dust and other impurities, and avoiding dust from entering the push-telescopic part 410, causing the push-telescopic part 410 to become stuck during use.

[0040] Furthermore, the mounting hole 310 is provided with a lever notch 311 , and the lever notch 311 is disposed at the upper end of the mounting hole 310 and is located at an end close to the covering plate 50 .

[0041] When the covering plate 50 is covered in the mounting hole 310, the edge of the covering plate 50 is in contact with the mounting hole 310. It is troublesome and laborious to remove the covering plate 50 from the mounting hole 310. To solve this problem, a leveraging notch 311 is provided at the edge where the mounting hole 310 and the covering plate 50 are in contact. When the covering plate 50 needs to be removed, a corresponding tool is inserted into the leveraging notch 311 until it contacts the covering plate 50. At this time, one side of the covering plate 50 can be lifted up by applying force, and then the covering plate 50 can be removed from the mounting hole 310. At this time, the leveraging notch 311 is a small slope provided on the mounting hole 310.

[0042] What is disclosed above is only a preferred embodiment of the present application, and it certainly cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. An invisible manhole cover, characterized in that: It comprises a bottom frame and a manhole cover body embedded in the bottom frame, and a bearing plate is provided at the bottom of the inner wall of the bottom frame, and the plate surface of the bearing plate bears the manhole cover body, and also comprises a pulling part, the pulling part is fixedly provided in the manhole cover body, and the upper surface of the pulling part is flush with the upper surface of the manhole cover body, and the pulling part is provided with a mounting hole; and A blocking portion is disposed in the mounting hole and is used to block the mounting hole, and the blocking portion is flush with an upper surface of the pulling portion.

2. The invisible manhole cover according to claim 1, characterized in that: The blocking portion is a bolt, and the mounting hole is a bolt hole.

3. The invisible manhole cover according to claim 1, characterized in that: The blocking portion includes a push-to-telescopic part, which is arranged in the mounting hole. The push-to-telescopic part can be telescopic between a first position and a second position. In the first position, the push-to-telescopic part is located in the mounting hole, and in the second position, the push-to-telescopic part is at least partially located outside the mounting hole.

4. The invisible manhole cover according to claim 3, characterized in that: The push-to-telescopic part includes a cylinder, a connecting rod and a pull rod. The cylinder is fixedly connected to the mounting hole, and a limiting groove is arranged on the top of the cylinder. The connecting rod is arranged in the cylinder, and a spring is arranged between the cylinder and the connecting rod. The two ends of the spring respectively resist one end of the cylinder and the connecting rod, and a telescopic locking mechanism is arranged between the other end of the connecting rod and the pull rod, and the pull rod is slidably matched with the limiting groove, and part of the pull rod can be extended out of the cylinder, and the telescopic locking mechanism is located in the cylinder and can move up and down along the cylinder.

5. The invisible manhole cover according to claim 4, characterized in that: A transverse through hole is provided at the upper end of the pull rod.

6. The invisible manhole cover according to claim 3, characterized in that: The sealing portion also includes a covering plate, the mounting hole is a step hole, the covering plate can cover the step hole, in the first position, the covering plate covers the step hole for sealing the step hole, the covering plate is flush with the upper surface of the pulling portion, the pressing and telescopic part is located in the step hole and under the covering plate.

7. The invisible manhole cover according to claim 6, characterized in that: The mounting hole is provided with a lever notch, and the lever notch is arranged at the upper end of the mounting hole and is located close to one end of the covering plate.

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