Urban cable intelligent electronic well lid

Abstract

The invention discloses an urban cable intelligent electronic well lid, and relates to the technical field of intelligent electronic well lids. Comprising a towing ring and a cover body, the lower side of the cover body is slidably connected with multiple tensile insertion rods and multiple supporting insertion rods, the multiple tensile insertion rods and the multiple supporting insertion rods are distributed at equal intervals in the circumferential direction, the supporting insertion rods and the multiple tensile insertion rods are used for being clamped to the upper side and the lower side of the towing ring respectively so as to limit the cover body, and the cover body is provided with an electronic lock. The electronic lock is provided with a control piece, the control piece is rotationally connected with a connecting ring, connecting rods are hinged between the tensile insertion rod and the control piece and between the supporting insertion rod and the connecting ring respectively, and the outer diameter of the cover body is smaller than the inner diameter of the towing ring. The supporting insertion rods and the tensile insertion rods are clamped on the upper side and the lower side of the towing ring respectively to jointly lock the cover body, so that the inner well cover can penetrate through the towing ring, the requirement for closing the double-layer well cover in the cable well is met, and the labor cost is saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of intelligent electronic manhole covers, and particularly relates to an urban cable intelligent electronic manhole cover. BACKGROUND

[0002] With the accelerating process of urbanization, power cables have become an important "lifeline" of urban energy supply, and the operation and maintenance of underground cables and channels are important guarantees for the stable operation of power equipment. The effective management of urban cable manhole covers, as an important part of cable operation and maintenance, directly affects the safety of the power grid and the reliability of power supply. However, the problems of "large quantity, wide distribution, and poor environment" make it extremely difficult to manage the manhole covers, and there are widespread damage and theft, which endangers the safety of people traveling and causes safety hazards to the related cable equipment underground. In order to monitor the state of the manhole cover, an electronic manhole cover is installed inside the cast iron manhole cover, and the inclination and opening state of the cast iron manhole cover outside are monitored by the sensor on the electronic manhole cover.

[0003] In order to maintain the normal operation of underground cables, workers need to enter the underground cable channel (pipe gallery) regularly for inspection. However, the design of the above-mentioned double-layer manhole cover makes it difficult for workers to close the manhole cover after entering the cable well, and an additional worker is needed to close the manhole cover from the ground, which increases the investment in human resources. SUMMARY

[0004] The present application provides an urban cable intelligent electronic manhole cover to overcome the shortcomings of the current double-layer manhole cover, which is not convenient to close the manhole cover from the inside when applied to the cable well, resulting in an increase in the investment in human resources.

[0005] The technical solution of the present application is: an urban cable intelligent electronic manhole cover, comprising: a drag ring and a cover body, the lower side of the cover body is slidably connected with a tensile insertion rod and a supporting insertion rod, the tensile insertion rod and the supporting insertion rod are both a plurality of equidistantly distributed in the circumferential direction, the supporting insertion rod and the tensile insertion rod are respectively used for clamping on the upper and lower sides of the drag ring to limit the cover body, the cover body is installed with an electronic lock, the electronic lock is installed with a control piece, the control piece is rotatably connected with a connecting ring, a connecting rod is hingedly connected between the tensile insertion rod and the control piece and between the supporting insertion rod and the connecting ring, respectively, and the outer diameter of the cover body is smaller than the inner diameter of the drag ring.

[0006] Further, there is a frictional resistance between the supporting insertion rod and the cover body.

[0007] Further, a linkage ring is slidably connected in the control piece, the linkage ring is fixedly connected with a linkage protruding strip, a plurality of linkage grooves are arranged on the side of the connecting ring close to the linkage ring, the linkage protruding strip is used for limiting the connecting ring through the linkage grooves, and a runner fixedly connected with the linkage ring is slidably connected to the lower side of the control piece. Further, a linkage ring is slidably connected in the control piece, the linkage ring is fixedly connected with a linkage protruding strip, a plurality of linkage grooves are arranged on the side of the connecting ring close to the linkage ring, the linkage protruding strip is used for limiting the connecting ring through the linkage grooves, and a runner fixedly connected with the linkage ring is slidably connected to the lower side of the control piece.

[0008] Further, one end of the support rod away from the center axis of the cover is fixedly connected with a support strip, two adjacent support strips are jointly and slidably connected with a compensation strip, the cover, all the support strips and all the compensation strips are jointly and fixedly connected with a sealing ring, and the sealing ring is used for contacting the drag ring and sealing the contact surface of the two.

[0009] Further, the lower side of the support strip is fixedly connected with a plurality of support springs, the support springs are used for contacting the drag ring and providing support for the support strip, a gap exists between the sealing ring and the drag ring, and the drag ring is provided with a control assembly for controlling the contact state of the sealing ring and the drag ring.

[0010] Further, the control assembly comprises an extrusion strip and a guide spring, the number of the extrusion strips is consistent with that of the tensile rods, the guide springs are uniformly distributed in a circumferential direction, all the extrusion strips are fixedly connected to one end of the adjacent tensile rods away from the center axis of the cover, and all the guide springs are fixedly connected to the lower side of the drag ring, and the guide springs are used for guiding the downward movement of the extrusion strips.

[0011] Further, the height of the guide spring in the vertical direction is not less than the gap between the sealing ring and the drag ring, and the structural rigidity of all the guide springs is greater than that of all the support springs.

[0012] Further, the position of the guide spring away from the center axis of the drag ring is provided with an inclined portion and an arc-shaped portion, and the arc-shaped portion is used for contacting the drag ring.

[0013] Further, the position of the guide spring away from the arc-shaped portion is provided with a convex rib portion, and the convex rib portion is used for limiting the extrusion strip.

[0014] Further, the upper side of the drag ring is provided with a flow guide ring surface.

[0015] Those skilled in the art can understand that the present application has at least the following beneficial effects: the present application relies on the support rod and the tensile rod to be clamped on the upper and lower sides of the drag ring respectively to jointly lock the cover, so that the inner well cover can pass through the drag ring, the demand for closing the double-layer well cover in the cable well is met, and the labor cost is saved.

[0016] The frictional resistance between the support rod and the cover prevents the support rod from being withdrawn into the cover during the process that the staff unlocks the inner well cover at the well mouth of the cable well, so that the inner well cover is prevented from being separated from the drag ring and falling into the cable well under the action of gravity at the moment of unlocking.

[0017] The support of the support strip by the support spring sheet causes a spacing between the sealing ring sheet and the drag ring, so that the exchange of gas in the cable well with the outside air is facilitated in a dry environment, which is conducive to reducing the concentration of harmful gas in the cable well and increasing the oxygen content therein, thereby saving the preparation time of the maintenance personnel before going down the well.

[0018] By utilizing the deformable property of the guide spring sheet, when an explosion occurs in the cable well due to a short circuit of the cable or the like, the cover body can be made to float up and down relative to the drag ring by the impact force of the explosion, thereby providing a channel for the flow of gas, reducing the peak pressure in the well, reducing the damage caused by the impact force to the environment in the well, and reducing the probability of the well cover being thrown out by the violent impact force. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a schematic diagram of the three-dimensional structure of the present application; Figure 2 is a schematic diagram of the three-dimensional structure of the cover body and the tension-resistant insertion rod of the present application; Figure 3 is an exploded view of the cover body, the support strip and the extrusion strip of the present application; Figure 4 is a schematic diagram of the three-dimensional structure of the cover body and the electronic lock of the present application; Figure 5 is a schematic diagram of the three-dimensional structure of the support strip and the compensation strip of the present application; Figure 6 is a schematic diagram of the three-dimensional structure of the linkage ring and the rotating wheel of the present application; Figure 7 is an exploded view of the control member, the connecting ring and the linkage ring of the present application; Figure 8 is a schematic diagram of the three-dimensional structure of the support strip and the sealing ring sheet of the present application; Figure 9 is a schematic diagram of the three-dimensional structure of the extrusion strip and the guide spring sheet of the present application; Figure 10 is a schematic diagram of the three-dimensional structure of the support strip and the extrusion strip in the retracted state of the present application.

[0020] The markings of the various components in the drawings are as follows: 1 - drag ring, 101 - flow guide ring surface, 2 - cover body, 201 - connecting rod, 3 - tension-resistant insertion rod, 4 - support insertion rod, 5 - electronic lock, 6 - control member, 7 - connecting ring, 8 - linkage ring, 801 - linkage protrusions, 802 - linkage grooves, 9 - rotating wheel, 10 - support strip, 11 - compensation strip, 12 - sealing ring sheet, 13 - support spring sheet, 14 - extrusion strip, 15 - guide spring sheet, 151 - inclined portion, 152 - arc-shaped portion, 153 - protrusion portion. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application is further described below in conjunction with specific embodiments.

[0022] Embodiment 1 The present embodiment provides a city cable intelligent electronic manhole cover to solve the problem that the existing double-layer manhole cover applied to the cable well cannot be closed from the inside.

[0023] Referring to Figures 1 to 6 A city cable intelligent electronic manhole cover comprises a drag ring 1 and a cover body 2. In actual use, the drag ring 1 is fixed in the cable well by expansion bolts or the like, and the lower side of the cover body 2 is provided with a power supply module, an edge IoT agent module, an outer manhole cover state detection module, and an ambient gas temperature and humidity detection module. The above four modules are existing devices, and will not be described here. (See Figure 1 The upper side of the cover body 2 is provided with two handles. The cover body 2 and all the parts thereon jointly constitute an inner manhole cover. In actual use, the uppermost side of the cable well is provided with an outer manhole cover made of cast iron. The lower side of the cover body 2 is slidably connected with a tensile insertion rod 3 and a supporting insertion rod 4. The tensile insertion rod 3 and the supporting insertion rod 4 are both three in number and uniformly distributed in the circumferential direction. The supporting insertion rod 4 and the tensile insertion rod 3 are respectively used for clamping on the upper and lower sides of the drag ring 1 to limit the cover body 2. The lower side of the cover body 2 is provided with an electronic lock 5. The electronic lock 5 is provided with a control member 6. The electronic lock 5 is an existing device, which has the functions of platform remote opening, local Bluetooth opening, local key opening, emergency unlocking, and in-well emergency unlocking. In the standby state, the lock cylinder of the electronic lock 5 is not in transmission with the control member 6, that is, when the electronic lock 5 is simply rotated by the key, the control member 6 cannot be rotated. When the outer side of the cable well is unlocked, the lock cylinder of the electronic lock 5 is in transmission with the control member 6 through Bluetooth or remote authorization. At this time, the control member 6 can be rotated by the key. When the inner side of the cable well is unlocked, the control member 6 can be directly rotated. The control member 6 is rotatably connected with a connecting ring 7. The tensile insertion rod 3 and the control member 6 and the supporting insertion rod 4 and the connecting ring 7 are respectively hingedly connected with a connecting rod 201. The outer diameter of the cover body 2 is smaller than the inner diameter of the drag ring 1.

[0024] The above arrangement can achieve that the supporting insertion rod 4 and the tensile insertion rod 3 are respectively clamped on the upper and lower sides of the drag ring 1 to jointly lock the cover body 2, so that the inner manhole cover can pass through the drag ring 1, meet the demand of closing the double-layer manhole cover in the cable well, and save labor cost.

[0025] Referring to Figure 2 There is a frictional resistance between the supporting insertion rod 4 and the cover body 2.

[0026] The above setting can realize, rely on the friction resistance between the support plug 4 and the cover 2, so that the staff in the cable well wellhead unlock the inner well cover in the process, prevent the support plug 4 withdraws into the cover 2, so as to prevent the inner well cover from falling into the cable well under the action of gravity and the drag ring 1 at the moment of unlocking.

[0027] Referring to Figure 6 and Figure 7 The control member 6 is slidably connected with a linkage ring 8, the upper side of the linkage ring 8 is fixedly connected with a linkage convex strip 801, the lower side of the connecting ring 7 is provided with a plurality of linkage grooves 802 distributed in the circumference, the linkage convex strip 801 is used for limiting the connecting ring 7 through the linkage grooves 802, the lower side of the control member 6 is slidably connected with a runner 9 fixedly connected with the linkage ring 8, in the state not disturbed by personnel, the linkage ring 8 and the runner 9 are located at the lowermost side of the sliding range under the action of their own gravity, in this state, the height of the linkage convex strip 801 is lower than the horizontal height of the lower side of the connecting ring 7, that is, the linkage convex strip 801 does not contact with the linkage groove 802.

[0028] The above setting can realize, utilize the linkage ring 8 and the runner 9 to control the connection state of the control member 6 and the connecting ring 7, so that the staff has two choices when opening the inner well cover in the cable well, which is convenient for the staff to select the most efficient well cover opening mode according to their own state.

[0029] The inspection process is as follows: the staff opens the outer well cover, and connects the lock core of the electronic lock 5 with the control member 6 through Bluetooth or remote authorization, then inserts the key into the electronic lock 5 and rotates clockwise (in this paper, the top view of the attached Figure 1 The electronic lock 5 drives the control member 6 to rotate, the control member 6 drives the three anti-pull plug rods 3 to withdraw to the lower side of the cover 2 through the adjacent connecting rods 201, at this time, the anti-pull plug rods 3 and the projection of the drag ring 1 on the horizontal plane do not coincide, the anti-pull plug rods 3 release the limiting action of the cover 2 upward, at this time, the staff pulls the cover 2 upward through the handle, so that the cover 2 drives the support plug 4 to separate from the drag ring 1.

[0030] The worker rotates the connecting ring 7 alone to drive the three supporting rods 4 to retract through the three connecting rods 201, at this time, the overall outer diameter of the inner well cover is smaller than the inner diameter of the drag ring 1, then the worker puts the cover body 2 into the pipe gallery through the cable well, and lowers into the cable well to close the outer well cover, then the worker makes the cover body 2 pass over the drag ring 1 from bottom to top, so that the tension rod 3 and the supporting rod 4 are located below and above the drag ring 1 respectively, at this time, the worker pushes the rotating wheel 9 upwards to drive the rotating wheel 9, the linkage ring 8 and the linkage protrusions 801 to move upwards, the linkage protrusions 801 enter the corresponding linkage grooves 802, at this time, the worker rotates the rotating wheel 9 counterclockwise, the rotating wheel 9 drives the control member 6 to rotate, and at the same time drives the connecting ring 7 to rotate through the linkage ring 8 and the linkage protrusions 801, so that the control member 6 and the connecting ring 7 drive the tension rod 3 and the supporting rod 4 to extend out of the cover body 2 through the connecting rods 201, and the drag ring 1 is clamped, at this time, the inner well cover is closed again.

[0031] After the worker finishes the inspection, the worker finds the nearest cable well, and selects the opening mode of the inner well cover according to the situation, one is that the worker simply retracts the tension rod 3 by rotating the rotating wheel 9, at this time, the upward limit of the inner well cover is released, and the worker can directly push the inner well cover upwards to push the outer well cover to open; the second is that the worker pushes the rotating wheel 9 upwards and then rotates it to drive the control member 6 and the connecting ring 7 to rotate, at the same time, the tension rod 3 and the supporting rod 4 are retracted, at this time, the upward and downward limits of the inner well cover are released, the worker first lowers the inner well cover into the pipe gallery, then opens the outer well cover, and then moves the inner well cover to the ground, the worker extends the supporting rod 4 by rotating the connecting ring 7 alone, and then aligns the cover body 2 with the drag ring 1, and then extends the tension rod 3 by key and Bluetooth remote authorization, thus completing the inspection.

[0032] Embodiment 2 This embodiment is further optimized on the basis of embodiment 1.

[0033] The existing cable well is kept sealed for a long time to keep dry insulation, so that the oxygen content inside is low, and the decomposition of the cable produces toxic gases such as hydrogen cyanide (HCN), carbon monoxide (CO), and hydrogen chloride (HCl), so that the maintenance personnel will actively exhaust the gas inside the cable well before entering the cable well to prevent suffocation or poisoning of the maintenance personnel after entering the cable well. However, this operation is time-consuming, which leads to low operation and maintenance efficiency, and in the case of an emergency such as a short circuit in the cable well, it is difficult to enter the cable well for repair at the first time.

[0034] Reference Figures 3 to 5 and Figure 8The end of the support rod 4 outside (the inside and outside in this paper are described relative to the cover 2, that is, the side close to the central axis of the cover 2 is the inside, and the side away from the central axis of the cover 2 is the outside) is fixedly connected with a support strip 10, and adjacent two support strips 10 are commonly and slidingly connected with a compensation strip 11, that is, three compensation strips 11 are staggered with three support strips 10, the compensation strip 11 is made of elastic metal material, the cover 2, all the support strips 10 and all the compensation strips 11 are commonly and fixedly connected with a sealing ring piece 12, the sealing ring piece 12 is used for contacting the drag ring 1 and sealing the contact surface of the two, the sealing ring piece 12 is made of neoprene rubber material, the upper part of the sealing ring piece 12 is fixedly extruded by the cover 2, and the lower part of the sealing ring piece 12 is fixed on the lower side of the support strip 10 and the compensation strip 11 in a manner of bonding or anchoring.

[0035] Referring to Figure 4 , Figure 5 and Figure 8 , the lower side of the support strip 10 is fixedly connected with a plurality of support spring pieces 13, the support spring piece 13 is used for contacting the drag ring 1 and providing support for the support strip 10, so that there is a spacing between the sealing ring piece 12 and the drag ring 1, and the drag ring 1 is provided with a control assembly for controlling the contact state of the sealing ring piece 12 and the drag ring 1.

[0036] The above arrangement can realize that the support spring piece 13 supports the support strip 10, so that a spacing is generated between the sealing ring piece 12 and the drag ring 1, so that the exchange of gas in the cable well with the external gas is facilitated in a dry environment, which is beneficial to reduce the concentration of harmful gas in the cable well and improve the oxygen content therein, and save the preparation time of the maintenance personnel before going down the well.

[0037] Referring to Figure 8 and Figure 9 , the control assembly comprises: three extrusion strips 14 and a plurality of guide spring pieces 15 uniformly distributed in the circumferential direction, all the extrusion strips 14 are respectively fixedly connected to one end of the outside of the adjacent tensile rod 3, and all the guide spring pieces 15 are fixedly connected to the lower side of the drag ring 1, and the guide spring piece 15 is used for guiding the downward movement of the extrusion strip 14; the height of the guide spring piece 15 in the vertical direction is not less than the spacing between the sealing ring piece 12 and the drag ring 1, and the structural rigidity of all the guide spring pieces 15 is greater than that of all the support spring pieces 13.

[0038] The above arrangement can realize that when the external gas temperature and humidity detection module detects that the external environment is humid and water may flow into the well, the electronic lock 5 directly controls the control piece 6 to rotate, so that the tensile rod 3 and the extrusion strip 14 continue to stretch out to the outside, so that the guide spring piece 15 guides the extrusion strip 14, the support spring piece 13 deforms, and the inner well cover moves downward as a whole, so that the sealing of the inner well cover is realized, and the probability of rainwater flowing into the cable well is reduced.

[0039] Cable well ventilation and sealing process: in the case that the maintenance personnel close the inner well cover and the outer air humidity detection module detects that the outside air is dry, only move the extrusion strip 14 to the state of contacting the inner ring of the lower side of the drag ring 1 (see Figure 8 the relative position of the extrusion strip 14 and the drag ring 1), in this state, both the fixing and anti-theft requirements of the inner well cover can be met, and the discharge channel for the gas in the cable well can be provided.

[0040] When the outer air humidity detection module detects that the outside air is humid, the electronic lock 5 is started and the anti-pull plug rod 3 and the extrusion strip 14 continue to extend outward through the control member 6, so that the extrusion strip 14 moves downward under the guidance of the guide spring 15, and the cover body 2 is driven downward by the anti-pull plug rod 3, and the support strip 10 is driven downward by the support plug rod 4, so that the distance between the support strip 10 and the drag ring 1 is reduced, and the support spring 13 is deformed, until the sealing ring 12 contacts the drag ring 1, and the electronic lock 5 stops.

[0041] To prevent rainwater from flowing into the cable well, when the staff opens the cable well again, the staff first pumps out the water stacked on the inner well cover, and then repeats the steps of the above embodiment 1 to open the inner well cover.

[0042] Embodiment 3 This embodiment is further optimized on the basis of embodiment 2, and provides the function of pressure relief when the cable well explodes.

[0043] Because the existing cable well is in a sealed state for a long time, combustible gas accumulates in it. When the cable appears thermal runaway due to short circuit or insulation aging, etc., it will cause the combustible gas in the cable well to explode.

[0044] Referring to Figure 9 , the outer side of the guide spring 15 is provided with an inclined part 151 and an arc-shaped part 152. The inclined part 151 is inclined from the inner side to the outer side from top to bottom, so that when the guide spring 15 is subjected to upward extrusion force, the inclined part 151 can be bent inward. The arc-shaped part 152 contacts the drag ring 1, and the existence of the inclined part 151 and the arc-shaped part 152 facilitates the bending deformation of the guide spring 15.

[0045] The above arrangement can realize that, by using the deformable characteristics of the guide spring 15, when the cable well explodes due to cable short circuit or other reasons, the cover body 2 can move up and down relative to the drag ring 1 by relying on the impact force of the explosion, thereby providing a channel for the flow of gas, reducing the peak value of the downhole pressure, reducing the damage caused by the impact force to the environment in the well, and reducing the probability of the well cover flying out due to the impact force.

[0046] Referring to Figure 9The inner side of the guide bullet 15 is provided with a convex rib 153 for limiting the extrusion strip 14.

[0047] The above arrangement can limit the extrusion strip 14 by the convex rib 153, prevent the extrusion strip 14 from moving inward, improve the stability of the extrusion strip 14 in the impact state, and further reduce the probability of the well lid flying out.

[0048] When an explosion occurs, the extrusion strip 14 is located outside the convex rib 153 in the state that the inner well lid is closed and sealed. In the case that the inner combustible gas is accumulated due to long-term closure, when an explosion occurs in the cable well, the impact force applies an upward force to the lid body 2, so that the lid body 2 drives the extrusion strip 14 to move upward through the anti-pulling rod 3, the extrusion strip 14 extrudes the guide bullet 15 upward, the inclined part 151 is bent and deformed, and the arc part 152 slides along the lower side of the towing ring 1 inward. At this time, the height of the guide bullet 15 in the vertical direction is reduced, the lid body 2 moves upward as a whole, the sealing ring 12 loses contact with the towing ring 1, and the gap between the towing ring 1 and the sealing ring 12 is used for discharging the gas in the well; after the extrusion strip 14 extrudes the guide bullet 15, the extrusion strip 14 is clamped outside the convex rib 153, the convex rib 153 limits the extrusion strip 14 from sliding inward from the outside to the inside, thereby improving the stability of the extrusion strip 14; then the maintenance personnel maintain the problem in the cable well, and replace the guide bullet 15 and reinstall the inner well lid.

[0049] Embodiment 4 This embodiment is further optimized on the basis of embodiment 2.

[0050] Referring to Figure 9 and Figure 10 , the outer part of the upper side of the towing ring 1 is provided with a flow guide ring surface 101; and the projection of the sealing ring 12 on the towing ring 1 does not intersect the flow guide ring surface 101, so that when the sealing ring 12 contacts and seals the towing ring 1, the flow guide ring surface 101 can accommodate the water accumulated on the upper side of the towing ring 1, thereby reducing the probability of external water entering the cable well when the cable well is opened.

[0051] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. An urban cable intelligent electronic manhole cover, characterized in that: include: A towing ring (1) and a cover body (2), wherein the lower side of the cover body (2) is slidably connected to a tensile rod (3) and a support rod (4), wherein the tensile rod (3) and the support rod (4) are both multiple and equidistantly distributed in the circumferential direction, and the support rod (4) and the tensile rod (3) are respectively used to clamp on the upper and lower sides of the towing ring (1) to limit the cover body (2), the cover body (2) is installed with an electronic lock (5), the electronic lock (5) is installed with a control member (6), and the control member (6) is rotatably connected to a connecting ring (7), and connecting rods (201) are respectively hinged between the tensile rod (3) and the control member (6) and the support rod (4) and the connecting ring (7), and the outer diameter of the cover body (2) is smaller than the inner diameter of the towing ring (1).

2. The urban cable intelligent electronic manhole cover according to claim 1, characterized in that: There is friction resistance between the support rod (4) and the cover body (2).

3. The urban cable intelligent electronic manhole cover according to claim 1, characterized in that: A linkage ring (8) is slidably connected inside the control member (6), and a linkage convex strip (801) is fixedly connected to the linkage ring (8). A plurality of linkage grooves (802) are provided on a side of the connection ring (7) close to the linkage ring (8), and the linkage convex strip (801) is used to limit the connection ring (7) through the linkage grooves (802). A rotating wheel (9) fixedly connected to the linkage ring (8) is slidably connected to the lower side of the control member (6).

4. The urban cable intelligent electronic manhole cover according to claim 1, characterized in that: One end of the support rod (4) away from the central axis of the cover body (2) is fixedly connected to a support bar (10), and two adjacent support bars (10) are slidably connected to a compensation bar (11). The cover body (2), all the support bars (10) and all the compensation bars (11) are fixedly connected to a sealing ring (12), and the sealing ring (12) is used to contact the drag ring (1) and seal the contact surface between the two.

5. The urban cable intelligent electronic manhole cover according to claim 4, characterized in that: A plurality of supporting springs (13) are fixedly connected to the lower side of the support bar (10), and the supporting springs (13) are used to contact the drag ring (1) and provide support for the support bar (10), so that there is a distance between the sealing ring piece (12) and the drag ring (1). The drag ring (1) is provided with a control component for controlling the contact state between the sealing ring piece (12) and the drag ring (1).

6. The urban cable intelligent electronic manhole cover according to claim 5, characterized in that: The control component includes: Extrusion strips (14) and guide springs (15), the number of the extrusion strips (14) is the same as the number of the tensile rods (3), the guide springs (15) are multiple and evenly distributed in the circumferential direction, all the extrusion strips (14) are respectively fixed to one end of the adjacent tensile rods (3) away from the central axis of the cover body (2), all the guide springs (15) are fixed to the lower side of the drag ring (1), and the guide springs (15) are used to guide the extrusion strips (14) to move downward.

7. The urban cable intelligent electronic manhole cover according to claim 6, characterized in that: The height of the guide spring pieces (15) in the vertical direction is not less than the distance between the sealing ring piece (12) and the drag ring (1), and the structural rigidity of all the guide spring pieces (15) is greater than the structural rigidity of all the supporting spring pieces (13).

8. The urban cable intelligent electronic manhole cover according to claim 6, characterized in that: The guide spring piece (15) is provided with an inclined portion (151) and an arc portion (152) at a position away from the central axis of the drag ring (1), and the arc portion (152) is in contact with the drag ring (1).

9. The urban cable intelligent electronic manhole cover according to claim 8, characterized in that: A ridge portion (153) is provided at a position of the guide spring piece (15) away from the arc-shaped portion (152), and the ridge portion (153) is used to limit the extrusion strip (14).

10. The urban cable intelligent electronic manhole cover according to claim 8, characterized in that: A flow guide annular surface (101) is provided on the upper side of the drag ring (1).

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