Power grid well

Abstract

The invention discloses a power grid well which comprises a well base and a well lid placed at an opening in the upper end of the well base. An edge supporting ring is arranged on the edge of the well lid in the circumferential direction. The bottom surface of the edge supporting ring is a conical surface with a narrow upper part and a wide lower part; a supporting groove matched with the edge supporting ring is formed in the upper end of the inner surface of the well base. The bottom face of the supporting groove is a supporting face matched with the conical face of the edge supporting ring. After the well lid is pressed, the edge supporting ring is meshed with the well base. When the well lid is placed at the opening in the upper end of the well base, the V-shaped circular ring at the bottom of the edge supporting ring is inserted into the V-shaped supporting groove of the well base, in this way, the influence of errors caused by casting precision on fitting precision is ignored to a certain extent, and the fitting precision is improved through the long-term external force effect. The extrusion of the well seat and the well cover can abrade certain conflicting surfaces, and the conflicting surfaces become more and more fit and more and more tight, so that the possibility of loosening is reduced.

Description

Technical Field

[0001] The invention relates to the field of power pipe network facilities, and in particular to a power grid well. Background Art

[0002] Most of the power grid manhole covers on the road are round. When installed, they are divided into a manhole seat and a manhole cover. Generally, the manhole seat and the manhole cover are cast with concrete, so it is generally difficult to make them fit perfectly. In addition, the manhole cover is placed on the protruding edge of the manhole seat without any locking measures. After being pressed for a long time, it will only become looser. Over time, the looseness will cause unnecessary impacts and troubles. Summary of the invention

[0003] In order to overcome the deficiencies in the prior art, the present invention provides a power grid well, which has the advantage of not being easily loosened.

[0004] In order to achieve the above object, the present invention adopts the following technical solution:

[0005] A power grid well, comprising a well seat and a well cover placed at the opening at the upper end of the well seat; an edge support ring is circumferentially arranged on the edge of the well cover; the bottom surface of the edge support ring is a conical surface that is narrow at the top and wide at the bottom; a support groove that cooperates with the edge support ring is formed at the upper end of the inner surface of the well seat; the bottom surface of the support groove is a support surface that matches the conical surface of the edge support ring; after the well cover is pressurized, the edge support ring bites the well seat.

[0006] By adopting the above technical solution, when the manhole cover is placed at the upper opening of the manhole seat, the V-shaped ring at the bottom of the edge support ring is inserted into the V-shaped support groove of the manhole seat. In this way, the influence of errors caused by casting accuracy on the fitting accuracy can be ignored to a certain extent. Through the action of long-term external forces, the extrusion of the manhole seat and the manhole cover can eliminate some conflicting surfaces, making them fit more and more tightly, thereby reducing the possibility of loosening.

[0007] Optionally, the angle between the bottom surface and the outer peripheral surface of the edge support ring is 65°-75°.

[0008] By adopting the above technical solution, when the angle between the bottom surface and the outer peripheral surface of the edge support ring is 65°-75°, the downward pressure applied to the manhole cover has an appropriate force component on the conical surface, avoiding excessive force component that damages the support for the manhole cover.

[0009] Optionally, an alarm unit is provided on the bottom surface of the manhole cover; when the manhole cover vibrates or detaches from the manhole seat, the alarm unit sends an alarm message.

[0010] By adopting the above technical solution, when the manhole cover vibrates or separates from the manhole seat, the alarm unit sends an alarm message, which means that the vibration of the manhole cover exceeds the set value and there is a tendency to loosen, or the manhole cover is separated from the manhole seat and there is a possibility of theft. After receiving the alarm message, relevant personnel can check the corresponding power grid well, so as to repair or replenish the manhole cover in time to avoid accidental injuries to subsequent pedestrians or vehicles, and it is also helpful to find the thief in time.

[0011] Optionally, the alarm unit includes a power supply, a vibration switch and an alarm module; the vibration switch is electrically connected to the power supply and the alarm module respectively; and the alarm module has GPS positioning and remote alarm functions.

[0012] By adopting the above technical solution, when the vibration amplitude of the manhole cover is greater than the set amplitude of the vibration switch, the vibration switch controls the alarm module to work, thereby reducing the possibility of false alarm information. The alarm module has GPS positioning and remote alarm functions, which can quickly know the location of the abnormal power grid well, and precise maintenance can be carried out later.

[0013] Optionally, it also includes a stepping-on power generation module; a storage groove is formed in the middle of the top surface of the manhole cover; the stepping-on power generation module is embedded in the storage groove; the alarm unit also includes a transformer module; the stepping-on power generation module is electrically connected to the transformer module; the transformer module is electrically connected to the power supply.

[0014] By adopting the above technical solution, the stepping power generation module converts the mechanical force pressing on the manhole cover into electricity, which is then converted by the substation module and stored in the power supply. This can achieve self-sufficiency, reduce the demand and dependence on external power supply, and improve the stability of operation.

[0015] Optionally, the alarm unit further includes a micro switch; the micro switch is electrically connected to the alarm unit; the manhole cover is detached from the manhole seat, triggering the micro switch so that the alarm unit starts working.

[0016] By adopting the above technical solution, during normal operation, the contacts of the microswitch abut against the side wall of the manhole cover, and its internal circuit is disconnected. When the manhole cover leaves the manhole seat, the internal circuit of the microswitch is closed, sending a signal to the alarm unit, so that the alarm unit starts working.

[0017] Optionally, an insulating carrier plate is provided between the manhole cover and the alarm unit.

[0018] By adopting the above technical solution, the presence of the insulating carrier improves the insulation performance of the alarm unit, avoiding the influence of external current on it, thereby causing the alarm unit to work abnormally.

[0019] Optionally, the middle part of the bottom surface of the manhole cover protrudes downward to form a bearing platform; the alarm unit is arranged on the bottom surface of the bearing platform; an anti-theft cover is fixed on the bottom surface of the manhole cover by rivets; the anti-theft cover covers the alarm unit and the bearing platform.

[0020] By adopting the above technical solution, the anti-theft cover covers the alarm unit. Since the anti-theft cover is connected by rivets, it is not easy to disassemble, thereby reducing the possibility of the alarm unit being stolen or damaged. At the same time, the anti-theft cover also covers the supporting platform on which the alarm unit is installed, which further improves the safety of the alarm unit.

[0021] Optionally, a plurality of through holes are provided on the side wall of the anti-theft cover.

[0022] By adopting the above technical solution, the presence of the through hole increases the smoothness of information transmission of the alarm unit.

[0023] Optionally, a fall prevention net is provided at the lower opening of the well seat.

[0024] By adopting the above technical solution, when an object accidentally enters the well seat, it will be blocked by the anti-fall net and will not fall into the deeper wire channel. This makes it convenient to remove the object and of course prevents the object from damaging the wire in the wire channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the present invention.

[0026] Figure 2 It is a schematic diagram of the explosion structure of the present invention.

[0027] Figure 3 It is a schematic structural diagram of the cross section of the present invention.

[0028] Figure 4 The present invention Figure 3 A is a schematic diagram of the partially enlarged structure of FIG.

[0029] Figure 5 It is a structural schematic diagram of the anti-theft cover of the present invention.

[0030] Figure 6 It is a structural schematic diagram of the alarm unit of the present invention.

[0031] Description of reference numerals:

[0032] 10. Well seat; 100. Support groove; 11. Reinforcement plate; 12. Anti-fall net support ring; 13. Upper and lower support rings; 14. Center support ring seat;

[0033] 20, manhole cover; 200, storage slot; 201, manhole cover handle; 21, bearing platform; edge support ring; 221, cone surface; 222, outer peripheral surface;

[0034] 30. Step on the power generation module;

[0035] 40. Alarm unit; 42. Transformer module; 43. Power supply; 44. Vibration switch; 45. Alarm module; 46. Micro switch;

[0036] 50, anti-theft cover; 500, through hole; 501, avoidance groove;

[0037] 60. Anti-fall net;

[0038] 70. Insulating carrier board. DETAILED DESCRIPTION

[0039] The following is combined with Figure 1-Figure 6 The present invention is described in further detail.

[0040] Embodiment 1: Disclose a power grid well, refer to Figure 1-Figure 3 , including a well seat 10 pre-buried under the road surface and a well cover 20 placed at the upper end outlet of the well seat 10; the well cover 20 and the well seat 10 are cast in one piece; the well seat 10 includes a central support ring seat 14 in the shape of a circular cylinder in the middle and a pair of upper and lower support rings 13 in the shape of annular rings respectively formed at the upper and lower ends of the well seat 10; in order to increase the strength of the well seat 10, a number of reinforcing plates 11 with uniform circumferences are formed between the bottom surfaces of the upper and lower support rings 13 and the outer cylindrical surface of the central support ring seat 14.

[0041] In order to improve the connection stability between the manhole cover 20 and the manhole seat 10, refer to Figure 3 and Figure 4 , an edge support ring 22 is arranged circumferentially on the edge of the manhole cover 20; the bottom surface of the edge support ring 22 is a conical surface 221 which is narrow at the top and wide at the bottom, wherein the angle between the bottom surface of the edge support ring 22 and the outer peripheral surface 222 is 65°-75°, wherein the above-mentioned angle is optimal with 70°; a support groove 100 which cooperates with the edge support ring 22 is formed at the upper end of the inner surface of the well seat 10, and the bottom surface of the support groove 100 is a support surface which matches the conical surface 221 of the edge support ring 22, so that the cross section of the contact surface between the manhole cover 20 and the well seat 10 is Z-shaped, and when the manhole cover 20 is subjected to force, the edge support ring 22 bites the well seat 10, so that the influence of the error caused by the casting precision on the fitting precision is ignored to a certain extent, and through the action of long-term external force, the extrusion of the well seat and the manhole cover can wear away some conflicting surfaces, making them more and more fitted and tight, thereby reducing the possibility of loosening.

[0042] Embodiment 2: The difference between Embodiment 2 and Embodiment 1 is: Figure 2 and Figure 3, an alarm unit 40 is provided on the bottom surface of the manhole cover 20; when the manhole cover 20 vibrates, the alarm unit 40 sends an alarm message. The alarm unit 40 includes a power supply 43, a vibration switch 44 and an alarm module 45; the vibration switch 44 is electrically connected to the power supply 43 and the alarm module 45 respectively; the alarm module 45 has GPS positioning and remote alarm functions. When the vibration amplitude of the manhole cover 20 is greater than the set amplitude of the vibration switch 44, the vibration switch 44 controls the alarm module 45 to work, and the alarm module 45 sends the position information and alarm information, thereby reducing the possibility of mis-sending the alarm information. The alarm module 45 has GPS positioning and remote alarm functions, which can quickly know the location of the abnormal power grid well, and accurate maintenance is required later.

[0043] In order to improve the installation convenience of the alarm unit 40, refer to Figure 2 and Figure 6 An insulating carrier plate 70 is fixed to the middle of the bottom surface of the manhole cover 20 by rivets; the insulating carrier plate 70 is made of plastic, so that when the relevant parts of the alarm unit 40 are installed, self-tapping screws can be used for connection, which is convenient for disassembly and assembly. At the same time, the insulating carrier plate 70 has insulation ability to prevent external current from affecting the alarm unit 40.

[0044] To improve power supply capability, refer to Figure 3 and Figure 6 , so as to improve the working endurance of the alarm unit 40, a storage groove 200 is sunken in the middle of the top surface of the manhole cover 20, and the bottom of the storage groove 200 protrudes downward to form a bearing platform 21; a stepping power generation module 30 is embedded in the storage groove 200; the stepping power generation module 30 and the side wall of the storage groove 200 are interference fit, so that the stepping power generation module 30 is not easy to be separated from the storage groove 200, and the insulating carrier 70 is fixed to the bottom surface of the bearing platform 21 by rivets. The alarm unit 40 also includes a transformer module 42; the stepping power generation module 30 is electrically connected to the transformer module 42; the transformer module 42 is electrically connected to the power supply 43. The stepping-on power generation module 30 is an existing product, which can convert the mechanical pressure applied to the stepping-on power generation module 30 into electricity, and then store the electricity in the power supply 43 through the transformer module 42. Since the alarm unit 40 circuit is in a normally open state, the alarm module 45 will only start working when the vibration switch 44 receives the vibration signal. In this way, the electricity can be self-sufficient and the dependence on the external power supply can be reduced. When the external power supply is cut off in time, the alarm unit 40 can still work, thereby improving the stability of the work.

[0045] In order to prevent the alarm unit 40 from being stolen, an anti-theft cover 50 is fixed to the middle of the bottom surface of the manhole cover 20 by rivets; the anti-theft cover 50 covers the alarm unit 40 and the supporting platform 21. Considering that the anti-theft cover 50 is made of metal, it has a certain influence on the signal transmission of the alarm unit 40, so refer to Figure 5 A plurality of evenly distributed through holes 500 are provided on the vertical side wall of the anti-theft cover 50 .

[0046] Embodiment 3: The difference between Embodiment 3 and Embodiment 2 is that: in order to improve the anti-theft property of the manhole cover, reference Figure 6 The alarm unit 40 further includes a micro switch 46, which is electrically connected to the vibration switch 44; when the manhole cover 20 is separated from the manhole seat 10, the micro switch 46 is triggered, so that the alarm unit 40 starts to work. Figure 5 The end surface of the anti-theft cover 50 facing the bearing platform 21 is formed with an escape groove 501 for inserting the wire connecting the micro switch 46 and the alarm module 45; the escape groove 501 extends to the vertical side wall of the anti-theft cover 50. When the manhole cover 20 is working normally, the contact of the micro switch 46 is squeezed by the inner cylindrical surface of the central support ring seat 14 of the manhole seat 10, and the internal circuit of the micro switch 46 is disconnected; when the manhole cover 20 is separated from the manhole seat 10, the contact of the micro switch 46 is no longer pressed by the inner cylindrical surface of the central support ring seat 14 of the manhole seat 10, and the internal circuit of the micro switch 46 is closed, so that the micro switch 46 sends an electrical signal to the alarm unit 40, so that the alarm unit 40 sends alarm information and position information.

[0047] In other embodiments, an anti-falling net 60 is provided at the lower opening of the well seat 10, Figure 3 The lower end of the inner cylindrical surface of the central support ring seat 14 of the well seat 10 is formed with a circular anti-fall net support ring 12, and the edge of the anti-fall net 60 is fixed on the anti-fall net support ring 12. In this way, when an object accidentally enters the well seat, it will be blocked by the anti-fall net and will not fall into the deeper wire channel. This makes it convenient to take out the object and of course prevents the object from damaging the wire in the wire channel. In addition, in order to facilitate the removal of the manhole cover 20, two manhole cover handles 201 are formed on the manhole cover 20. When taking out the manhole cover 20, the manhole cover 20 is hooked with a hook through the manhole cover handle 201 to pull the manhole cover 20 upward.

[0048] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A power grid well, comprising a well seat (10) and a well cover (20) placed at the upper opening of the well seat (10); characterized in that: An edge support ring (22) is arranged around the edge of the manhole cover (20); the bottom surface of the edge support ring (22) is a conical surface (221) which is narrow at the top and wide at the bottom; a support groove (100) which matches the edge support ring (22) is formed at the upper end of the inner surface of the manhole seat (10); the bottom surface of the support groove (100) is a support surface which matches the conical surface (221) of the edge support ring (22); when the manhole cover (20) is under pressure, the edge support ring (22) bites into the manhole seat (10).

2. The electric network well according to claim 1, characterized in that: The angle between the bottom surface of the edge support ring (22) and the outer peripheral surface (222) is 65°-75°.

3. The electric network well according to claim 1, characterized in that: An alarm unit (40) is arranged on the bottom surface of the manhole cover (20); when the manhole cover (20) vibrates or separates from the manhole seat (10), the alarm unit (40) sends an alarm message.

4. The electric network well according to claim 3, characterized in that: The alarm unit (40) comprises a power supply (43), a vibration switch (44) and an alarm module (45); the vibration switch (44) is electrically connected to the power supply (43) and the alarm module (45) respectively; the alarm module (45) has GPS positioning and remote alarm functions.

5. The electric network well according to claim 4, characterized in that: The device also comprises a stepping-on power generation module (30); a storage groove (200) is formed in a depression in the middle of the top surface of the manhole cover (20); the stepping-on power generation module (30) is embedded in the storage groove (200); the alarm unit (40) further comprises a transformer module (42); the stepping-on power generation module (30) is electrically connected to the transformer module (42); the transformer module (42) is electrically connected to the power source (43).

6. The electric network well according to claim 4, characterized in that: The alarm unit (40) further comprises a micro switch (46); the micro switch (46) is electrically connected to the alarm module (45); when the manhole cover (20) is detached from the manhole seat (10), the micro switch (46) is triggered, thereby starting the alarm unit (40) to operate.

7. The electric network well according to claim 4, characterized in that: An insulating carrier plate (70) is provided between the manhole cover (20) and the alarm unit (40).

8. The electric network well according to claim 4, characterized in that: The middle part of the bottom surface of the manhole cover (20) protrudes downward to form a bearing platform (21); the alarm unit (40) is arranged on the bottom surface of the bearing platform (21); an anti-theft cover (50) is fixed to the bottom surface of the manhole cover (20) by rivets; the anti-theft cover (50) covers the alarm unit (40) and the bearing platform (21).

9. The electric network well according to claim 8, characterized in that: A plurality of through holes (500) are provided on the side wall of the anti-theft cover (50).

10. The electric network well according to claim 1, characterized in that: An anti-falling net (60) is provided at the lower opening of the well seat (10).

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