A well cover for a power well

Abstract

The utility model relates to the technical field of well lid, especially a well lid for electric power well convenient to maintain, the well lid is opened frequently, not only can influence traffic, simultaneously still can produce the security threat to the vehicle and the pedestrian on the road, and when the maintenance personnel enter the well and maintain, if the vehicle on the road hits the well lid opened frequently, still possibly can cause the security threat to the safety of the maintenance personnel in the well, a well lid for electric power well convenient to maintain, including the well seat, the upper portion rotationally connected with the well lid in the well seat, the outside welding of well seat has the reinforcing rib that distributes uniformly in a circle, the inside welding of well seat has the support ring, the support ring is located the downside of well lid, and both mutually contact, be provided with the air exchange subassembly for providing fresh air on well lid. The utility model does not need to open the well lid before the maintenance and can discharge the toxic and harmful gas in it, reduces the influence to the road traffic.

Description

Technical Field

[0001] This utility model relates to the field of manhole cover technology, and in particular to a manhole cover for power wells that is easy to maintain. Background Technology

[0002] An electrical well is a structure built underground specifically for laying, inspecting, and maintaining power cables. Because it contains a lot of electrical equipment, it needs to be inspected and maintained frequently to ensure the reliable operation of the city's power grid.

[0003] The existing maintenance method involves multiple workers opening the manhole cover, setting up safety warning signs around it, and then one or more maintenance personnel going down into the well for maintenance. However, power wells are relatively enclosed underground spaces with poor air circulation, and various toxic, harmful, flammable, explosive, or asphyxiating gases such as methane, hydrogen sulfide, and carbon dioxide may accumulate inside. Therefore, workers need to open the manhole cover in advance before going down into the well to release the toxic gases. However, a manhole cover that is always open not only affects traffic but also poses a safety threat to vehicles and pedestrians on the road. Moreover, if a vehicle on the road hits a manhole cover while maintenance personnel are inside the well, it may also threaten the safety of the maintenance personnel. Utility Model Content

[0004] To address the technical problems that constantly open manhole covers not only disrupt traffic but also pose safety threats to vehicles and pedestrians, and that vehicles hitting the open manhole covers could endanger the safety of maintenance personnel when they enter the manhole for repairs, this utility model provides a manhole cover for power wells that is easy to maintain.

[0005] The technical implementation scheme of this utility model is as follows: a manhole cover for easy maintenance of power wells, including a manhole base, a manhole cover rotatably connected to the upper part of the manhole base, reinforcing ribs evenly distributed in the circumference welded on the outer side of the manhole base, a support ring welded on the inner side of the manhole base, the support ring being located on the lower side of the manhole cover and the two in contact with each other, and a ventilation component for providing fresh air is provided on the manhole cover.

[0006] Furthermore, the ventilation assembly includes a fixing ring, which is detachably installed on the upper side of the manhole cover. The fixing ring is rotatably connected to a rotating plate, which is rotatably connected to the manhole base.

[0007] Furthermore, the manhole cover has a circumferentially evenly distributed ventilation hole 1, and the rotating plate has a circumferentially evenly distributed ventilation hole 2. The distance between the ventilation hole 1 and the ventilation hole 2 and the center point of the manhole cover is the same.

[0008] Furthermore, the number and size of the circumferentially uniformly distributed ventilation holes one and the circumferentially uniformly distributed ventilation holes two are the same, and the two are staggered.

[0009] Furthermore, the manhole cover is threaded with a fixing bolt, and a limiting hole is opened on the fixing ring. The limiting hole is located between two adjacent ventilation holes. The fixing bolt is limited and engaged with the fixing ring through the limiting hole and the ventilation hole.

[0010] Furthermore, a handle is installed on the lower side of the manhole cover away from the rotating connection point with the manhole seat, and a fixing frame is installed on the lower side of the manhole cover. A limit rod is slidably connected inside the fixing frame. The limit rod is located on the lower side of the support ring, and the two are matched for limiting.

[0011] Furthermore, the manhole cover is threaded with a rotating rod, the limiting rod is equipped with a rack, the rack is slidably connected to the fixing frame, the rotating rod is splined with a gear, the gear is rotatably connected to the fixing frame, and the gear meshes with the rack.

[0012] This utility model has the following advantages: It can release toxic and harmful gases inside the manhole without opening the manhole cover before maintenance, reducing the impact on road traffic. At the same time, when maintenance is not required, by misaligning the first and second ventilation holes, it prevents impurities and water on the ground from entering the power manhole and threatening the electrical equipment inside the power manhole.

[0013] This invention ensures that the manhole cover is not in a normally open state when maintenance personnel are underground, thus not affecting traffic. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a three-dimensional structural cross-sectional view of the well base and well cover of this utility model.

[0016] Figure 3 This is a three-dimensional structural diagram of the manhole cover, fixing ring, and rotating plate of this utility model.

[0017] Figure 4 This is a three-dimensional structural diagram of the ventilation hole 2, the fixing bolt, and the limiting hole of this utility model.

[0018] Figure 5 This is a three-dimensional structural diagram of the manhole cover, handle, and fixing frame of this utility model.

[0019] Figure 6 This is a three-dimensional structural diagram of the rotating rod, rack, and gear of this utility model.

[0020] In the attached diagram: 1-Well base, 2-Well cover, 3-Reinforcing rib, 4-Support ring, 5-Fixing ring, 6-Rotating plate, 7-Ventilation hole one, 8-Ventilation hole two, 9-Fixing bolt, 10-Limiting hole, 11-Handle, 12-Fixing frame, 13-Limiting rod, 14-Rotating rod, 15-Rack, 16-Gear. Detailed Implementation

[0021] References to embodiments herein mean that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0022] A type of easy-to-maintain manhole cover for power wells, such as... Figure 1 and Figure 2 As shown, it includes a manhole base 1, a manhole cover 2 rotatably connected to the upper part of the manhole base 1, reinforcing ribs 3 evenly distributed in the circumference welded on the outer side of the manhole base 1, a support ring 4 welded on the inner side of the manhole base 1, the support ring 4 being located on the lower side of the manhole cover 2 and the two being in contact with each other, and an air exchange component for providing fresh air is provided on the manhole cover 2.

[0023] like Figures 1-4 As shown, the ventilation assembly includes a fixing ring 5, which is detachably installed on the upper side of the manhole cover 2. The fixing ring 5 is rotatably connected to a rotating plate 6, which is rotatably connected to the manhole base 1.

[0024] like Figures 2-4 As shown, the manhole cover 2 has circumferentially evenly distributed ventilation holes 7, and the rotating plate 6 has circumferentially evenly distributed ventilation holes 8. The distance between the ventilation holes 7 and 8 and the center point of the manhole cover 2 is the same. The number and size of the circumferentially evenly distributed ventilation holes 7 and 8 are the same, and they are staggered.

[0025] like Figures 2-4 As shown, the manhole cover 2 is threaded with a fixing bolt 9, and a limiting hole 10 is opened on the fixing ring 5. The limiting hole 10 is located between two adjacent ventilation holes 8. The fixing bolt 9 is limited and engaged with the fixing ring 5 through the limiting hole 10 and the ventilation hole 8.

[0026] like Figure 2 , Figure 4 and Figure 5 As shown, a handle 11 is installed on the lower side of the manhole cover 2 away from the rotatable connection point with the manhole base 1. A fixing frame 12 is installed on the lower side of the manhole cover 2. A limit rod 13 is slidably connected inside the fixing frame 12. The limit rod 13 is located on the lower side of the support ring 4, and the two are in a limiting fit.

[0027] like Figure 6 As shown, the manhole cover 2 is threadedly connected to a rotating rod 14, and a rack 15 is installed on the limiting rod 13. The rack 15 is slidably connected to the fixing frame 12. The rotating rod 14 is splinedly connected to a gear 16. The gear 16 is rotatably connected to the fixing frame 12, and the gear 16 meshes with the rack 15.

[0028] When it is necessary to inspect the electrical equipment inside the manhole, the maintenance personnel first place a safety warning sign near the manhole to be inspected. Then, the maintenance personnel unscrew the fixing bolt 9 and rotate the rotating plate 6 until all the second ventilation holes 8 coincide with the adjacent first ventilation hole 7, and the limiting hole 10 coincides with the threaded hole where the fixing bolt 9 is located. At this time, the maintenance personnel tighten the fixing bolt 9. At this time, the toxic and harmful gases in the power manhole are discharged through the first ventilation hole 7 and the second ventilation hole 8. After the maintenance is completed, the above steps are repeated in reverse so that the first ventilation hole 7 and the second ventilation hole 8 are misaligned. In this way, the toxic and harmful gases inside can be discharged without opening the manhole cover 2 before maintenance, reducing the impact on road traffic. At the same time, when maintenance is not required, by misaligning the first ventilation hole 7 and the second ventilation hole 8, impurities and water on the ground can be prevented from entering the power manhole and threatening the electrical equipment inside the power manhole.

[0029] When it is necessary to inspect the electrical equipment inside the well, the maintenance personnel first rotate the rotating rod 14. As the rotating rod 14 rotates, it moves downward and drives the gear 16 to rotate. The gear 16 drives the limit rod 13 to move through the rack 15 until the limit rod 13 no longer contacts the support ring 4. Then, the rotating rod 14 is stopped. At this time, the maintenance personnel open the well cover 2. After the maintenance personnel enter the well, they can close the well cover 2 by rotating the rotating rod 14 in the opposite direction (at this time, the second ventilation hole 8 coincides with the adjacent first ventilation hole 7). In this way, the well cover 2 will not affect traffic when the maintenance personnel are in the well.

[0030] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of the present invention and should not be construed as limiting the scope of protection of the present invention in any way. Based on this explanation, those skilled in the art can conceive of other specific embodiments of the present invention without creative effort, and these embodiments will all fall within the scope of protection of the present invention.

Claims

1. A manhole cover for power wells that is easy to maintain, characterized in that: It includes a well base (1), a well cover (2) is rotatably connected to the upper part of the well base (1), reinforcing ribs (3) are welded to the outer side of the well base (1) in a circumferentially evenly distributed manner, a support ring (4) is welded to the inner side of the well base (1), the support ring (4) is located on the lower side of the well cover (2) and the two are in contact with each other, and an air exchange component for providing fresh air is provided on the well cover (2).

2. A maintenance-friendly manhole cover for power wells according to claim 1, characterized in that: The ventilation assembly includes a fixing ring (5), which is detachably installed on the upper side of the manhole cover (2). The fixing ring (5) is rotatably connected to a rotating plate (6), which is rotatably connected to the manhole seat (1).

3. A maintenance-friendly manhole cover for power wells according to claim 2, characterized in that: The manhole cover (2) has a circumferentially evenly distributed air vent (7), and the rotating plate (6) has a circumferentially evenly distributed air vent (8). The distance between the air vent (7) and the air vent (8) and the center point of the manhole cover (2) is the same.

4. A maintenance-friendly manhole cover for power wells according to claim 3, characterized in that: The number and size of the circumferentially uniformly distributed ventilation holes one (7) and the circumferentially uniformly distributed ventilation holes two (8) are the same, and the two are staggered.

5. A maintenance-friendly manhole cover for power wells according to claim 4, characterized in that: The manhole cover (2) is threaded with a fixing bolt (9), and a limiting hole (10) is opened on the fixing ring (5). The limiting hole (10) is located between two adjacent ventilation holes (8). The fixing bolt (9) is limited and engaged with the fixing ring (5) through the limiting hole (10) and the ventilation hole (8).

6. A maintenance-friendly manhole cover for power wells according to claim 5, characterized in that: A handle (11) is installed on the side of the manhole cover (2) away from the rotating connection between it and the manhole seat (1). A fixing frame (12) is installed on the lower side of the manhole cover (2). A limit rod (13) is slidably connected inside the fixing frame (12). The limit rod (13) is located on the lower side of the support ring (4), and the two are matched in a limiting manner.

7. A maintenance-friendly manhole cover for power wells according to claim 6, characterized in that: The manhole cover (2) is threaded with a rotating rod (14), and a rack (15) is installed on the limiting rod (13). The rack (15) is slidably connected to the fixing frame (12). The rotating rod (14) is splined with a gear (16). The gear (16) is rotatably connected to the fixing frame (12), and the gear (16) meshes with the rack (15).

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