CN115075302B - A well lid structure that is used for cable tunnel well head to have cable on-line measuring function - Google Patents

Abstract

The invention relates to the technical field of cable hazardous gas detection, in particular to a well lid structure with a cable online detection function for a cable tunnel wellhead. The methane gas to gathering in the cable shaft improves the conflagration risk degree in the cable shaft, and the problem of the unable accurate concentration of knowing the dangerous gas in the cable shaft when electric power maintainer goes into the cable shaft. The technical scheme is as follows: a well lid structure with a cable online detection function for a cable tunnel wellhead comprises a well seat; the well seat is hinged with a well cover, well seat concrete is poured on the upper portion of the cable well, and an exhaust mechanism is arranged on the lower side face of the well cover. According to the invention, the exhaust mechanism is used for exhausting the dangerous gas in the fan cover, so that the condition that the concentration of methane in the cable well is too high is avoided, the cable in the cable well is burnt out by deflagration, and meanwhile, the condition that rainwater enters the cable well through four exhaust holes in the center of the well cover in rainy days is avoided, and the cable in the cable well is threatened.

Description

A well lid structure that is used for cable tunnel well head to have cable on-line measuring function

Technical Field

The invention relates to the technical field of cable hazardous gas detection, in particular to a well lid structure with a cable online detection function for a cable tunnel wellhead.

Background

After the cable is used for a certain period of time, the insulating property of the insulating material of the cable can be degraded to a certain degree, the degraded insulating material can generate gas, and dangerous gases such as sulfur dioxide, hydrogen chloride, carbon monoxide and methane mainly form gas components, wherein the sulfur dioxide, the hydrogen chloride and the carbon monoxide threaten the health of human bodies, and the methane has the risk of deflagration.

When electric power maintainer overhauls the cable in getting into the cable shaft, need open the well lid, and through the ventilation blower with the evacuation back of hazardous gas, wear the harmful gas alarm again and just can go into the cable shaft in, this in-process need be wasted a large amount of time, and the methane gas of gathering still will improve the conflagration risk degree in the cable shaft, and electric power maintainer is unable accurate when going into the cable shaft, learn the concentration of hazardous gas in the cable shaft, it threatens to the electric power maintainer healthy production of working in the cable shaft.

Disclosure of Invention

The invention provides a well lid structure with a cable online detection function for a cable tunnel well head, which is used for discharging dangerous gas, and aims to solve the problems that the fire risk degree in a cable well is improved by methane gas accumulated in the cable well, and the concentration of the dangerous gas in the cable well cannot be accurately known when an electric power overhaul personnel enters the cable well, so that the health of the electric power overhaul personnel working in the cable well is threatened.

The technical purpose of the invention is realized by the following technical scheme: a well lid structure that is used for cable tunnel well head to have cable on-line measuring function, including the well seat, it has the well lid to articulate on the well seat, well seat concrete placement in the upper portion of cable shaft, the center department of well lid opens there is a plurality of exhaust hole, the downside of well lid is equipped with control module, control module passes through thing networking communication network with remote control terminal and is connected, the downside of well lid is equipped with gaseous detector, gaseous detector and control module electricity are connected, the downside of well lid is equipped with supporting mechanism, supporting mechanism is used for strengthening the holding power of well seat to the well lid, the downside of well lid is equipped with exhaust mechanism, exhaust mechanism locates in the supporting mechanism, exhaust mechanism and the cooperation of a plurality of exhaust hole of well lid center department, exhaust mechanism is used for discharging the hazardous gas in the cable shaft, exhaust mechanism and control module electricity are connected, the downside of well lid is equipped with self-locking mechanism, self-locking mechanism is used for locking well seat and well lid, exhaust mechanism and self-locking mechanism cooperation, prevent that the well lid from opening when exhaust mechanism exhausts.

Further, the supporting mechanism is including annular support frame, annular support frame rigid coupling is in the medial surface of well seat, annular support frame's the left and right sides both ends are all opened two first slip spacing grooves and two second slip spacing grooves, four second slip spacing grooves communicate with adjacent first slip spacing groove respectively, the right part rigid coupling of well lid downside has a cartridge type mount, spacing sliding connection has first pinion rack in the cartridge type mount, the right part of first pinion rack is equipped with the cavity, sliding connection has first spline rod in the cavity of first pinion rack right part, first spline rod sliding connection is in the right part of well lid, the equal rigid coupling in the left and right sides both ends of well lid downside has two first mounts, it is connected with first bull stick to rotate between two first mounts on right side, the middle part rigid coupling of first bull stick has first gear, the equal rigid coupling in both ends has second gear around the first bull stick, the outer end of four first mounts all sliding connection has first sliding block, the upper and lower sides of four first sliding block outer ends all sets up to the inclined plane, the upper and lower both sides of two adjacent first external upper and lower sides all open spacing grooves, the rigid coupling has the adjacent sliding block of first pinion rack, the equal rigid coupling has two adjacent sliding block supporting components, the sliding block of the adjacent sliding block is used for supporting the two sliding block of the adjacent sliding block of the left and right side.

Further, the supporting locking assembly comprises eight first limiting blocks, the eight first limiting blocks are respectively connected in adjacent second sliding limiting grooves in a sliding mode, the eight first limiting blocks are respectively fixedly connected with the annular supporting frame through first springs, and the eight first limiting blocks are respectively matched with the adjacent second sliding limiting grooves.

Further, exhaust mechanism includes fan cover, fan cover rigid coupling is in the central part of well lid downside, the detachable explosion-proof machine that installs of link is passed through to the lower part of fan cover inner wall, the rigid coupling has second spline pole on explosion-proof machine's the output shaft, the upper portion of second spline pole is rotated with the central part of well lid and is connected, the lower extreme rigid coupling of second spline pole has the fan, be equipped with on the second spline pole and prevent exhaust hole jam subassembly, it is used for preventing that the rainwater from getting into inside the cable shaft to prevent exhaust hole jam subassembly.

Further, prevent that exhaust hole blocks up the subassembly including the second mount, second mount rigid coupling is on the upper portion of second spline pole, the second mount is located the upside of fan, the upper portion circumference rigid coupling of second mount lateral surface has a plurality of gag lever post, sliding connection has first extrusion piece on the gag lever post, the lateral surface of the first extrusion piece of a plurality of all sets up to the inclined plane, there is the third mount inside of fan casing through link sliding connection, the third mount is located the upside of second mount, open the lower part of third mount has the frustum groove, equal rigid coupling has the cross mount in a plurality of exhaust hole of well lid center department, equal sliding connection has the third spline pole in a plurality of cross mount, a plurality of cross mount respectively with adjacent third spline pole between the rigid coupling have the second spring, a plurality of second spring overlaps respectively in the adjacent third spline pole outside, the equal rigid coupling in the upper end of a plurality of third spline pole has the sliding plate, the sliding plate cooperates with the sliding seal of exhaust hole, the lower extreme of a plurality of third spline pole all is equipped with the rolling wheel, the upside contact fit of rolling wheel and third mount.

Further, the inner wall of a frustum-shaped groove at the lower part of the third fixing frame is set to be a smooth inclined surface, the inclined surface at the outer side of the first extrusion block is set to be a smooth inclined surface, the friction resistance between the first extrusion block and the third fixing frame is reduced, and the extrusion force of the first extrusion blocks is larger than that of the second springs.

The utility model discloses a fan cover, self-locking mechanism, first bull head mount, second bull head mount, two first bull head mounts, two second stopper, two second stoppers, two adjacent first sliding blocks, the upper side of two second stoppers has the fourth fixed frame, the middle part rigid coupling of fourth fixed frame has the fourth pinion plate, fourth pinion plate and fourth gear meshing.

Further, still including release mechanism, release mechanism locates the right part of ring carrier, release mechanism is used for opening the well lid from the cable pit inside, release mechanism is including second extrusion piece, the second extrusion piece is equipped with two, two second extrusion piece longitudinal symmetry set up, two second extrusion pieces rigid coupling respectively in the first sliding block leading flank of right rear side, the right part of two second extrusion pieces opposite side all is provided with the inclined plane, the lower part rigid coupling on ring carrier inner wall right side has second button head mount, it is connected with the threaded rod to rotate on the second button head mount, the screw direction of two parts is opposite about the threaded rod, the right side sliding connection of ring carrier inner wall has two third extrusion pieces, two third extrusion piece longitudinal symmetry set up, two third extrusion pieces respectively with two parts threaded connection about the threaded rod, the left part of two third extrusion pieces opposite side all sets up to the inclined plane, the right part of ring carrier is equipped with lifts the lid subassembly, it is used for making things convenient for the maintenance personal to open the well lid from inside to lift the lid subassembly.

Further, lift the lid subassembly including the fifth pinion rack, the fifth pinion rack rigid coupling is on the upper portion of downside third extrusion piece right flank, annular support frame right side lower part first slip spacing inslot internal rotation is connected with the fourth bull stick, the middle part rigid coupling of fourth bull stick has the fifth gear, fifth gear and fifth pinion rack meshing, annular support frame right side lower part first slip spacing inslot rigid coupling has the fifth mount, sliding connection has the second sliding block on the fifth mount, the upper portion sliding connection of second sliding block has the third stopper, the rigid coupling has the third spring between third stopper and the second sliding block, the trailing flank rigid coupling of second sliding block has the sixth pinion rack, sixth pinion rack and fifth gear meshing, sixth pinion rack and fifth pinion rack set up in a staggered way, annular support frame's right part sliding connection has the bracing piece, the lower part of bracing piece is opened there is annular spacing groove, the up side of bracing piece and the downside contact of well lid, the rigid coupling has the fourth spring between bracing piece and the annular support frame.

Further, the upper side of the third limiting block is arranged to be an inclined plane, the lower side face of the supporting rod is arranged to be an inclined plane, and the upper side face of the third limiting block is matched with the lower side face of the supporting rod and used for limiting the supporting rod by the third limiting block.

As can be appreciated by those skilled in the art, the present invention has at least the following beneficial effects: according to the invention, by arranging the supporting mechanism, the supporting force on the middle part of the well cover is increased by utilizing the matching of the four first fixing frames, the four first sliding blocks and the annular supporting frame, the middle part of the well cover is prevented from being damaged after being extruded by external force, so that a cable in a cable well is exposed and in an external environment, the first spline rod is manually pulled to move upwards by an electric power maintainer, the four first sliding blocks are driven to be not matched with the annular supporting frame any more, the limit on the well cover is relieved, and the electric power maintainer can conveniently open the well cover; through an exhaust mechanism, an output shaft of an explosion-proof motor is used for driving a second spline rod to drive a fan to rotate, hazardous gas in a cable well is adsorbed into a fan cover, the second spline rod is used for driving a second fixing frame and a third fixing frame to rotate, four sliding plates are driven to move upwards to stop four exhaust holes in the center of the well cover, the hazardous gas in the fan cover is exhausted through the four exhaust holes in the center of the well cover, the condition that the concentration of methane in the cable well is too high and accordingly the cable in the cable well is burnt out by deflagration is avoided, the four sliding plates are driven to move downwards by stopping the explosion-proof motor to stop working, the four exhaust holes in the center of the well cover are blocked, and the condition that rainwater enters the cable well through the four exhaust holes in the center of the well cover to cause rainwater deposition and threaten cables in the cable well in rainy days is avoided; the third toothed plate is driven to move upwards by the third fixing frame through the self-locking mechanism, and the two second limiting blocks are driven to move downwards to limit the adjacent second sliding blocks respectively, so that the well cover is prevented from being opened and placed in the cable well when the dangerous gas in the cable well is not completely discharged by an electric power overhaul worker, and the threat of the dangerous gas to the body health of the electric power overhaul worker is reduced; through release mechanism, utilize the threaded rod to rotate four second sliding blocks of transmission no longer with the cooperation of annular bracing frame, remove the spacing to the well lid, reached the purpose of opening the well lid in the follow cable shaft, utilize the second extrusion piece of downside to drive fifth pinion rack rebound, transmission bracing piece rebound extrusion well lid makes things convenient for electric power maintainer to open the well lid from the downside.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a perspective sectional view of the support mechanism of the present invention.

Fig. 3 is a sectional view of a first spline shaft of the support mechanism of the present invention.

Fig. 4 is a schematic perspective view of a first sliding block of the supporting mechanism of the present invention.

Fig. 5 is a sectional view of a three-dimensional structure of a first limiting block of the supporting mechanism of the invention.

Fig. 6 is a perspective view of the exhaust mechanism of the present invention.

Fig. 7 is a perspective sectional view of the first extrusion block of the exhaust mechanism of the present invention.

Fig. 8 is a perspective view of the sliding plate of the exhaust mechanism of the present invention.

Fig. 9 is a schematic perspective view of the self-locking mechanism of the present invention.

Fig. 10 is a schematic perspective view of a second rotating rod of the self-locking mechanism of the present invention.

Fig. 11 is a schematic perspective view of a second stopper of the self-locking mechanism of the present invention.

Fig. 12 is a perspective sectional view of the unlocking mechanism of the present invention.

Fig. 13 is an enlarged view of the three-dimensional structure of the present invention at a.

Fig. 14 is a schematic perspective view of a third limiting block of the unlocking mechanism of the present invention.

In the figure: 101-well base, 102-well cover, 201-annular support frame, 2011-first sliding limit groove, 2012-second sliding limit groove, 202-cylindrical fixing frame, 203-first toothed plate, 204-first spline rod, 205-first fixing frame, 206-first rotating rod, 207-first gear, 208-second gear, 209-first sliding block, 210-second toothed plate, 211-first limit block, 212-first spring, 301-fan cover, 302-explosion-proof motor, 303-second spline rod, 304-fan, 305-second fixing frame, 306-limit rod, 307-first extrusion block, 308-third fixing frame, 309-cross fixing frame, 310-third spline rod, 311-second spring, 312-sliding plate, 313-rotating wheel, 401-third toothed plate, 402-second rotating rod, 403-third gear, 404-405, 405-first fixing frame, 311-third rotating rod, 513-fourth rotating rod, 505-fourth rotating rod, 511-fourth rotating rod, 510-fourth ball-head spring, 507-fourth rotating rod, 511-fourth rotating block, 507-fourth round head spring, 410-third rotating block, 507-fourth rotating block, 410-fourth round head spring, 507-fourth rotating block, 507, 410-fourth rotating block, 507, fourth round head rotating block, and fourth rotating block.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus consistent with certain aspects of the present application, as detailed in the appended claims.

Example 1

A well lid structure that is used for cable tunnel well head to have cable on-line measuring function, as shown in fig. 1-11, including well seat 101, it has well lid 102 to articulate on well seat 101, well seat 101 concrete placement is in the upper portion of cable shaft well, the center department of well lid 102 opens four exhaust holes that are used for discharging the hazardous gas in the cable shaft, the downside of well lid 102 is equipped with control module, control module passes through thing networking communication network with remote control terminal and is connected, the downside of well lid 102 is equipped with gas detector, gas detector and control module electricity are connected, the downside of well lid 102 is equipped with supporting mechanism, supporting mechanism is used for strengthening the holding power of well seat 101 to well lid 102, the downside of well lid 102 is equipped with exhaust mechanism, exhaust mechanism locates in the supporting mechanism, exhaust mechanism is connected with four exhaust holes of well lid 102 center department, exhaust mechanism is used for discharging the hazardous gas in the cable shaft, exhaust mechanism and control module electricity are connected, the downside of well lid 102 is equipped with self-locking mechanism, self-locking mechanism is used for tightly locking well lid 101 and well lid 102, exhaust mechanism and self-locking mechanism cooperate, open from the well lid outside when exhaust mechanism exhausts.

When a gas detector on the well cover 102 detects that dangerous gases such as sulfur dioxide, hydrogen chloride, carbon monoxide and methane appear in a cable well, the gas detector transmits signals to the control module, the control module transmits the signals to the remote control terminal through the internet of things communication network, the gas content in the cable well is detected through the gas detector, the data are transmitted to the remote control terminal through the control module, the data of the gas content are watched on line through the remote control terminal, the time for detecting the cable in the well is convenient to adjust, the control module controls the work of the exhaust mechanism, the exhaust mechanism does not block four exhaust holes in the center of the well cover 102 any more when working, the exhaust mechanism exhausts the dangerous gases in the cable well through the four exhaust holes in the center of the well cover 102, the phenomenon that the methane concentration in the cable well is too high is avoided, the cable in the cable well is burnt by deflagration, the exhaust mechanism drives the self-locking mechanism to work, the support mechanism is limited, the well cover 102 is opened when the dangerous gases in the cable well are not completely exhausted by an electric power overhaul personnel, and the electric power cable well is put into the cable well, and the danger of the electric power overhaul personnel on the health of the electric power overhaul personnel is reduced.

In the process, an electric power overhaul personnel observes dangerous concentration in a cable well through a remote control terminal until an exhaust mechanism exhausts dangerous gas in the cable well, a gas detector transmits a signal to a control module, the control module transmits the signal to the remote control terminal through an internet of things communication network, the control module controls the exhaust mechanism to stop working, the exhaust mechanism stops working, the exhaust mechanism automatically resets to block four exhaust holes in the center of the well cover 102, rainwater is prevented from entering the cable well through the four exhaust holes in the center of the well cover 102 in rainy days to cause rainwater deposition, and threats are generated to cables in the cable well, the exhaust mechanism drives a self-locking mechanism to reset, the support mechanism is not limited any more after the self-locking mechanism resets, at the moment, the electric power overhaul personnel manually starts a support mechanism, the support mechanism stops working on the well cover 102, the electric power overhaul personnel opens the well cover 102 through the support mechanism, the electric power overhaul personnel enters the cable well to maintain the cable well cover in the cable well, and after maintenance is finished, the electric power overhaul personnel come out of the cable well, the electric power overhaul personnel manually drives the support mechanism to re-cover the cable well through the support mechanism 102, the support mechanism to loosen the support mechanism, and the support mechanism to automatically reset, and increase the support force of the cable well cover 102.

Example 2

On the basis of embodiment 1, as shown in fig. 2 to 5, the supporting mechanism includes an annular supporting frame 201, the annular supporting frame 201 is welded to the inner side surface of the well base 101, two first sliding limiting grooves 2011 and two second sliding limiting grooves 2012 are respectively formed at the left and right portions of the annular supporting frame 201, the four second sliding limiting grooves 2012 are respectively communicated with the adjacent first sliding limiting grooves 2011, a cylindrical fixing frame 202 is welded at the right portion of the lower side surface of the well lid 102, a first toothed plate 203 is connected in the cylindrical fixing frame 202 in a limiting and sliding manner, a cavity is formed at the right portion of the first toothed plate 203, a first spline rod 204 is connected in the cavity at the right portion of the first toothed plate 203 in a sliding manner, the first spline rod 204 is connected in the right portion of the well lid 102 in a sliding manner, two first fixing frames 205 are welded at the left and right portions of the lower side surface of the well lid 102, a first rotating rod 206 is rotatably connected between the two first fixing frames 205 at the right side, the middle part of the first rotating rod 206 is in keyed connection with a first gear 207, the front end and the rear end of the first rotating rod 206 are in keyed connection with a second gear 208, the outer ends of the four first fixing frames 205 are in sliding connection with first sliding blocks 209, the upper side and the lower side of the outer ends of the four first sliding blocks 209 are all arranged into inclined planes, the four first sliding blocks 209 are prevented from being blocked by a first sliding limiting groove 2011 when entering into adjacent first sliding limiting grooves 2011 respectively, the upper side and the lower side of the outer parts of the left adjacent first sliding blocks 209 and the lower side of the outer parts of the right adjacent first sliding blocks 209 are provided with limiting grooves, the supporting force for the middle part of the well lid 102 is increased through the matching of the four first fixing frames 205, the four first sliding blocks 209 and the annular supporting frame 201, the middle part of the well lid 102 is prevented from being damaged after being extruded by external strong force, so that cables in the cable well are exposed to the external environment, the inner sides of the front adjacent two first sliding blocks 209 are welded with a second gear 210, four second toothed plates 210 mesh with adjacent second gear 208 respectively, it sets up to control the welded second toothed plate 210 longitudinal symmetry on two adjacent first sliding blocks 209, utilize the first spline pole 204 rebound of electric power maintainer manual pulling, four first sliding blocks 209 no longer cooperate with ring carrier 201, remove spacing to well lid 102, make things convenient for electric power maintainer to open well lid 102, ring carrier 201's the left and right sides both are equipped with the tight subassembly of support, it is used for spacing first sliding block 209 to remove to support the tight subassembly of lock.

As shown in fig. 2 to fig. 5, the supporting and locking assembly includes eight first limiting blocks 211, eight first limiting blocks 211 are respectively slidably connected in adjacent second sliding limiting grooves 2012, first springs 212 are respectively fixedly connected between the eight first limiting blocks 211 and the annular supporting frame 201, the eight first limiting blocks 211 are respectively matched with the adjacent second sliding limiting grooves 2012, the first springs 212 are respectively used for driving the adjacent first limiting blocks 211, and clamping the limiting grooves at the upper and lower portions of the first sliding block 209, so as to prevent a child from opening the well lid 102 by pulling the first spline rod 204.

As shown in fig. 6 to 8, the exhaust mechanism includes a fan cover 301 for collecting hazardous gas in the cable well, the fan cover 301 is welded at the central portion of the lower side surface of the well lid 102, the lower portion of the inner wall of the fan cover 301 is connected with an explosion-proof motor 302 through a connecting frame bolt, an output shaft of the explosion-proof motor 302 is fixedly connected with a second spline rod 303, the upper portion of the second spline rod 303 is rotatably connected with the central portion of the well lid 102, a fan 304 for adsorbing hazardous gas in the cable well is fixedly connected to the lower end of the second spline rod 303, the second spline rod 303 is driven by the output shaft of the explosion-proof motor 302 to drive the fan 304 to rotate, so as to adsorb the hazardous gas in the cable well into the fan cover 301, an exhaust hole blocking prevention assembly is arranged on the second spline rod 303, and the exhaust hole blocking prevention assembly is used for preventing rainwater from entering the cable well through four exhaust holes at the center of the well lid 102.

As shown in fig. 6-8, the exhaust hole blockage preventing assembly includes a second fixing frame 305, the second fixing frame 305 is welded on the upper portion of the second spline shaft 303, the second fixing frame 305 is located on the upper side of the fan 304, four limiting rods 306 are welded on the upper portion of the outer side surface of the second fixing frame 305 in the circumferential direction, a first pressing block 307 is connected to the upper limiting rods 306 in a sliding manner, the outer side surfaces of the four first pressing blocks 307 are all set to be inclined surfaces, the outer inclined surface of the first pressing block 307 is set to be a smooth inclined surface, a third fixing frame 308 is connected to the inside of the fan cover 301 in a sliding manner through a connecting frame, the third fixing frame 308 is located on the upper side of the second fixing frame 305, a frustum-shaped groove is formed in the lower portion of the third fixing frame 308, the inner wall of the frustum-shaped groove in the lower portion of the third fixing frame 308 is set to be a smooth inclined surface for reducing the frictional resistance between the first pressing block 307 and the third fixing frame 308, the extrusion force of a plurality of first extrusion blocks 307 is larger than that of a plurality of second springs 311, the outer inclined surfaces of four first extrusion blocks 307 are parallel to the outer wall of a frustum-shaped groove at the lower part of a third fixing frame 308, cross fixing frames 309 are welded in four exhaust holes at the center of the well lid 102, third spline rods 310 are connected in the four cross fixing frames 309 in a sliding manner, the second springs 311 are fixedly connected between the four cross fixing frames 309 and the adjacent third spline rods 310 respectively, the four second springs 311 are sleeved on the outer sides of the adjacent third spline rods 310 respectively, sliding plates 312 for preventing rainwater from entering a cable well through exhaust holes at the center of the well lid 102 are welded at the upper ends of the four third spline rods 310, the sliding plates 312 are in sliding sealing fit with the exhaust holes of the well lid 102, rotating wheels 313 for reducing friction force are arranged at the lower ends of the four third spline rods 310, the rotating wheels 313 are in contact fit with the upper side surfaces of the third fixing frames 308, drive second mount 305 and third mount 308 through second spline pole 303 and rotate, four exhaust holes of well lid 102 center department are no longer blockked up in the upwards movement of four sliding plates 312 of transmission, discharge the hazardous gas in fan cover 301 through four exhaust holes of well lid 102 center department, avoid the methane concentration in the cable shaft too high, thereby the cable in the cable shaft is burnt out to the deflagration, stop work through explosion-proof machine 302, four third spline poles 310 of transmission drive adjacent sliding plate 312 downward movement respectively, block up four exhaust holes of well lid 102 center department, avoid when rainy day, rainwater gets into inside the cable shaft through four exhaust holes of well lid 102 center department, cause the rainwater deposit, threaten the cable in the cable shaft.

As shown in fig. 9-11, the self-locking mechanism is including third pinion rack 401, third pinion rack 401 welds in the right side of third mount 308 outer wall, the right side of fan guard 301 rotates and is connected with second bull stick 402, the left end key of second bull stick 402 is connected with third gear 403, third gear 403 and the meshing of third pinion rack 401, the right-hand member rigid coupling of second bull stick 402 has worm 404, the right part of well lid 102 downside has two first button head mounts 405 welded, two first button head mounts 405 fore-and-aft symmetry set up, two first button head mounts 405 all are located between two first mounts 205 of right part, it is connected with third bull stick 406 to rotate between two first button head mounts 405, the rear end rigid coupling of third bull stick 406 has worm wheel 407, worm wheel 407 and worm 404 cooperate, the middle key of third bull stick 406 is connected with fourth gear 408, the first 205 upper portion on right side all sliding connection has second stopper 409, two second stopper 409 respectively with the first adjacent worm wheel 411 of adjacent electric power, the upper side key of two second bull stick 406 has fourth gear 408 welded, the maintenance personnel's cable holder 411 is opened when the electric power maintenance personnel's cable is not passing through the second stopper 410 and the electric power cable maintenance personnel's cable maintenance safety stopper 410, the electric power is opened the electric power maintenance personnel's safety stopper 409 in the well lid 102.

After the gas detector on the well cover 102 detects that dangerous gas occurs in the cable well, the gas detector transmits a signal to the control module, the control module transmits the signal to the remote control terminal through the internet of things communication network, the control module controls the operation of the explosion-proof motor 302, the output shaft of the explosion-proof motor 302 drives the fan 304 to rotate through the second spline rod 303, and the fan 304 rotates to generate negative pressure to adsorb the dangerous gas in the cable well into the fan cover 301.

In the process, the second spline rod 303 drives the second fixing frame 305 to rotate, the second fixing frame 305 drives the four first squeezing blocks 307 to rotate through the four limiting rods 306, the four first squeezing blocks 307 rotate under the action of centrifugal force, the four first squeezing blocks 307 move outwards to squeeze the third fixing frame 308, the third fixing frame 308 is squeezed to drive the four rotating wheels 313 to move upwards, the four rotating wheels 313 respectively drive the adjacent third spline rods 310, the four third spline rods 310 move upwards to squeeze the adjacent second springs 311 respectively, the four second springs 311 are squeezed to generate reverse acting force, the four third spline rods 310 respectively drive the adjacent sliding plates 312 to move upwards, the four sliding plates 312 move upwards to no longer block the four exhaust holes in the center of the well cover 102, and dangerous gas in the fan cover 301 is exhausted through the four exhaust holes in the center of the well cover 102, so that the concentration of methane in the cable well is prevented from being too high, and the cable in the cable well is burnt by explosion.

The third fixing frame 308 drives the third toothed plate 401 to move upwards, the third toothed plate 401 moves upwards to drive the second rotating rod 402 through the third gear 403, rotate anticlockwise under the right view, the second rotating rod 402 rotates to drive the worm wheel 407 to rotate through the worm 404, the worm wheel 407 rotates to drive the fourth gear 408 through the third rotating rod 406, rotate anticlockwise under the front view, the fourth gear 408 rotates anticlockwise to drive the fourth fixing frame 410 to move downwards through the fourth toothed plate 411, the fourth fixing frame 410 drives the two second limiting blocks 409 to move downwards, and the two second limiting blocks 409 move downwards to limit the adjacent first sliding blocks 209 respectively.

At this moment, if the electric power maintainer moves up through the first pinion rack 203 of the first spline pole 204 transmission of pulling to two first sliding blocks 209 that drive the right side move to the left side, but because two second stopper 409 are spacing to adjacent first sliding block 209 respectively this moment, therefore the electric power maintainer can not open well lid 102 this moment, when avoiding the electric power maintainer hazardous gas in the cable shaft to not discharge completely, open well lid 102 to enter the cable shaft, thereby reduced the threat to the electric power maintainer is healthy.

In the process, the electric power overhaul personnel observe the concentration of dangerous gas in the cable well through the remote control terminal, until the fan 304 discharges the dangerous gas in the cable well completely, the gas detector transmits signals to the control module, the control module transmits the signals to the remote control terminal through the internet of things communication network, the control module controls the explosion-proof motor 302 to stop working, after the explosion-proof motor 302 stops working, the second fixing frame 305 does not rotate any more to generate centrifugal force, under the action of the four second springs 311, the four third spline rods 310 move downwards to reset, the four third spline rods 310 respectively drive the adjacent sliding plates 312 to move downwards, four exhaust holes in the center of the well cover 102 are blocked, and rainwater is prevented from entering the cable well through the four exhaust holes in the center of the well cover 102 in rainy days to cause rainwater deposition and soak cables in the cable well.

The four third spline rods 310 respectively drive the adjacent rotating wheels 313 to move downwards, the four rotating wheels 313 move downwards to extrude the third fixing frame 308, the third fixing frame 308 moves downwards to extrude the four first extruding blocks 307, and the four first extruding blocks 307 are extruded to move inwards to reset.

The third fixing frame 308 drives the third toothed plate 401 to move downwards, the third toothed plate 401 moves downwards and drives the second rotating rod 402 through the third gear 403, the third rotating rod rotates clockwise in a right view, the second rotating rod 402 rotates and drives the worm gear 407 through the worm 404, the worm gear 407 rotates and drives the fourth gear 408 through the third rotating rod 406, the fourth gear 408 rotates clockwise in a front view, the fourth fixing frame 410 is driven to move upwards through the fourth toothed plate 411 by the clockwise rotation of the fourth gear 408, the two second limiting blocks 409 move upwards by the fourth fixing frame 410, and the limitation of the adjacent first sliding blocks 209 on the two second limiting blocks 409 move upwards respectively.

At this time, the electric power overhaul personnel manually pulls the first spline rod 204 to move up, when the first spline rod 204 moves up until the lower end of the first spline rod contacts the upper end of the inner wall of the first toothed plate 203, the first spline rod 204 drives the first toothed plate 203 to move up, the first toothed plate 203 moves up and drives the two second gears 208 to rotate counterclockwise through the first gear 207 and the first rotating rod 206, the two second gears 208 rotate counterclockwise through the four second toothed plates 210 respectively, the two first sliding blocks 209 on the right side are driven to move left, the two first sliding blocks 209 on the left side move right, the two first sliding blocks 209 on the right side move left and respectively press the two adjacent first limiting blocks 211, the two first sliding blocks 209 on the left side move right and respectively press the two adjacent first limiting blocks 211, the four first limiting blocks on the upper side are pressed to move up and respectively press the adjacent first springs 212, the four first limiting blocks 212 on the upper side generate reverse acting forces, the four first limiting blocks 211 on the lower side are pressed down and move down and do not more than the four first limiting blocks 211, and the four first limiting blocks 211 move down and the four first limiting blocks 211 under the initial restoring state, and the four first limiting blocks 211 move down and the four first limiting blocks 211.

When the upper end of first pinion rack 203 contacts the lower side of well lid 102, four first sliding blocks 209 no longer cooperate with annular support frame 201, remove the spacing to well lid 102, and electric power maintainer continues to stimulate first spline pole 204 this moment, opens well lid 102, goes into in the cable shaft, maintains the cable shaft in the cable shaft, and after the maintenance, electric power maintainer comes out from the cable shaft.

After the electric power maintainer comes out from the cable shaft, the electric power maintainer covers the well lid 102 manually, and after the well lid 102 covers, the electric power maintainer loosens the first spline rod 204, and through the cooperation of four first mounts 205, four first sliding blocks 209 and annular bracing frame 201 this moment, the holding power to the well lid 102 middle part has been increased.

Example 3

On the basis of the embodiment 2, as shown in fig. 12 to 14, the well lid unlocking device further comprises an unlocking mechanism, the unlocking mechanism is arranged at the right portion of the annular supporting frame 201, the unlocking mechanism is used for opening the well lid 102 from the inside of the cable well, the unlocking mechanism comprises two second extrusion blocks 501, the two second extrusion blocks 501 are arranged in a vertically symmetrical manner, the two second extrusion blocks 501 are respectively welded on the front side surface of the first sliding block 209 at the right rear side, the right portions of the opposite sides of the two second extrusion blocks 501 are both provided with inclined surfaces, the lower portion of the right side of the inner wall of the annular supporting frame 201 is welded with a second round-head fixing frame 502, a threaded rod 503 is rotatably connected to the second round-head fixing frame 502, the thread directions of the upper portion and the lower portion of the threaded rod 503 are opposite, the right side sliding connection of 201 inner walls of annular support frame has two third extrusion pieces 504, two third extrusion pieces 504 longitudinal symmetry set up, two third extrusion pieces 504 respectively with threaded rod 503 two upper and lower threaded connection, the left part of two third extrusion pieces 504 opposite sides all sets up to the inclined plane, rotate the first sliding block 209 that two second extrusion pieces 501 of transmission drove well lid 102 downside right part rear side and remove left through threaded rod 503, until four first sliding blocks 209 no longer cooperate with annular support frame 201, remove the spacing to well lid 102, the purpose of opening well lid 102 in the cable shaft has been reached, the right part of annular support frame 201 is equipped with lifts the lid subassembly, it is used for making things convenient for maintainer to open well lid 102 from inside to lift the lid subassembly.

As shown in fig. 12-14, the cover lifting assembly includes a fifth toothed plate 505, the fifth toothed plate 505 is welded to the upper portion of the right side surface of the third pressing block 504 at the lower side, a fourth rotating rod 506 is rotatably connected to a first sliding limiting groove 2011 at the right lower portion of the annular supporting frame 201, a fifth gear 507 is keyed to the middle portion of the fourth rotating rod 506, the fifth gear 507 is engaged with the fifth toothed plate 505, a fifth fixing frame 508 is welded to the first sliding limiting groove 2011 at the right lower portion of the annular supporting frame 201, a second sliding block 509 is slidably connected to the fifth fixing frame 508, a third limiting block 510 is slidably connected to the upper portion of the second sliding block 509, the upper side surface of the third limiting block 510 is provided with an inclined surface, a third spring 511 is fixedly connected between the third limiting block 510 and the second sliding block 509, the welding of the trailing flank of second sliding block 509 has sixth pinion rack 512, sixth pinion rack 512 and the meshing of fifth gear 507, sixth pinion rack 512 and the crisscross setting of fifth pinion rack 505, the right part sliding connection of annular support frame 201 has bracing piece 513, the lower part of bracing piece 513 is opened there is the annular spacing groove, the downside of bracing piece 513 sets up to the inclined plane, the last side of third stopper 510 and the downside cooperation of bracing piece 513, it is spacing to bracing piece 513 for third stopper 510, the last side of bracing piece 513 and the downside contact of well lid 102, the rigid coupling has fourth spring 514 between bracing piece 513 and the annular support frame 201, third extrusion piece 504 through the downside drives fifth pinion rack 505 and upwards removes, transmission bracing piece 513 rebound extrusion well lid 102, make things convenient for electric power maintainer to open well lid 102 from the downside.

When the electric power maintainer maintains in the cable shaft, if the well lid 102 of opening is covered again under the effect of external force, at this moment the electric power maintainer climbs to the time of touching well lid 102 along the cat ladder in the cable shaft, the electric power maintainer rotates threaded rod 503, threaded rod 503 rotates the screw thread through its upper and lower two, drive the second extrusion piece 501 of the third extrusion piece 504 downstream extrusion upside of upside respectively, the second extrusion piece 501 of the third extrusion piece 504 upstream extrusion downside of downside, two second extrusion pieces 501 receive the extrusion and drive the first sliding block 209 of right back side and move left, repeat the above-mentioned process, until four first sliding blocks 209 no longer cooperate with ring carrier 201, relieve the spacing to well lid 102.

In the above-mentioned process, third extrusion piece 504 of downside drives fifth pinion rack 505 upward movement, fifth pinion rack 505 upward movement drives sixth pinion rack 512 leftward movement through fifth gear 507, sixth pinion rack 512 drives third stopper 510 leftward movement through second sliding block 509, until four first sliding blocks 209 no longer cooperate with annular support frame 201, relieve the spacing to well lid 102, third stopper 510 leftward movement is to its annular spacing groove that breaks away from the lower part of bracing piece 513, bracing piece 513 no longer receives third stopper 510 spacing, under the effect of fourth spring 514, bracing piece 513 upward movement extrudes well lid 102, well lid 102 upwards stirs and opens an opening, make things convenient for electric power maintainer to open well lid 102 from the downside.

After the well lid 102 is opened, the electric power maintainer reverse rotation threaded rod 503 makes the second sliding block 509 drive the third limiting block 510 and move rightwards to reset to the initial state.

Electric power maintainer opens well lid 102, comes out from the cable shaft in, and the above-mentioned process of repetition covers well lid 102, when well lid 102 extrudeed bracing piece 513, and electric power maintainer steps on well lid 102 with the foot, makes well lid 102 cover again to loosen first spline bar 204, make this device reset to initial condition.

In the process that the well lid 102 covers the well lid again, the well lid 102 extrudes the supporting rod 513, the supporting rod 513 moves downwards to extrude the fourth spring 514, the fourth spring 514 is extruded to generate reverse acting force, until the lower end of the supporting rod 513 contacts with the upper side face of the third limiting block 510, the third limiting block 510 moves leftwards to extrude the third spring 511, the third spring 511 is extruded to generate reverse acting force, until the well lid 102 covers the well lid again, the supporting rod 513 moves downwards to reset to the initial state, the supporting rod 513 does not extrude the adjacent third limiting block 510 any more, and under the action of the third spring 511, the third limiting block 510 enters the annular limiting groove at the lower part of the supporting rod 513 again to limit the supporting rod 513.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (7)

1. A well lid structure with a cable online detection function for a cable tunnel wellhead comprises a well base (101), wherein a well lid (102) is hinged to the well base (101), a plurality of exhaust holes are formed in the center of the well lid (102), a control module is arranged on the lower side face of the well lid (102), the control module is connected with a remote control terminal through an Internet of things communication network, a gas detector is arranged on the lower side face of the well lid (102), and is electrically connected with the control module;

the exhaust mechanism comprises a fan cover (301), the fan cover (301) is fixedly connected to the central portion of the lower side face of the well lid (102), an explosion-proof motor (302) is detachably mounted on the lower portion of the inner wall of the fan cover (301) through a connecting frame, a second spline rod (303) is fixedly connected to an output shaft of the explosion-proof motor (302), the upper portion of the second spline rod (303) is rotatably connected with the central portion of the well lid (102), a fan (304) is fixedly connected to the lower end of the second spline rod (303), an exhaust hole blocking prevention assembly is arranged on the second spline rod (303), and the exhaust hole blocking prevention assembly is used for preventing rainwater from entering the cable well;

the exhaust hole blocking prevention assembly comprises a second fixing frame (305), the second fixing frame (305) is fixedly connected to the upper portion of a second spline rod (303), the second fixing frame (305) is located on the upper side of a fan (304), a plurality of limiting rods (306) are fixedly connected to the upper portion of the outer side face of the second fixing frame (305) in the circumferential direction, first extrusion blocks (307) are slidably connected onto the limiting rods (306), the outer side faces of the first extrusion blocks (307) are all arranged to be inclined faces, a third fixing frame (308) is slidably connected to the inside of the fan cover (301) through a connecting frame, the third fixing frame (308) is located on the upper side of the second fixing frame (305), a frustum-shaped groove is formed in the lower portion of the third fixing frame (308), cross fixing frames (309) are fixedly connected into a plurality of exhaust holes in the center of the well cover (102), third spline rods (310) are slidably connected into the plurality of cross fixing frames (309), second exhaust holes (309) are fixedly connected with the third spline rods (310) respectively, a plurality of cross exhaust holes (309) are fixedly connected with the lower ends of the third spline rods (310) in a plurality of sliding grooves, a plurality of the cross exhaust holes (309), a plurality of second spring (311) are respectively matched with the sliding plates (312), the sliding plates (310), the sliding plates (312), the sliding plates (310) on the outer sides of the third fixing frames (313) respectively, the rotating wheel (313) is in contact fit with the upper side surface of the third fixing frame (308);

the supporting mechanism comprises an annular supporting frame (201), the annular supporting frame (201) is fixedly connected to the inner side face of the well seat (101), two first sliding limiting grooves (2011) and two second sliding limiting grooves (2012) are formed in the left portion and the right portion of the annular supporting frame (201), the four second sliding limiting grooves (2012) are respectively communicated with the adjacent first sliding limiting grooves (2011), a cylindrical fixing frame (202) is fixedly connected to the right portion of the lower side face of the well lid (102), a first toothed plate (203) is connected to the cylindrical fixing frame (202) in a limiting sliding mode, a cavity is formed in the right portion of the first toothed plate (203), a first spline rod (204) is connected to the cavity in the right portion of the first toothed plate (203) in a sliding mode, the first spline rod (204) is connected to the right part of the well lid (102) in a sliding manner, the left part and the right part of the lower side surface of the well lid (102) are fixedly connected with two first fixing frames (205), a first rotating rod (206) is connected between the two first fixing frames (205) on the right side in a rotating manner, a first gear (207) is fixedly connected to the middle part of the first rotating rod (206), second gears (208) are fixedly connected to the front end and the rear end of the first rotating rod (206), the outer ends of the four first fixing frames (205) are connected with first sliding blocks (209) in a sliding manner, the upper side and the lower side of the outer ends of the four first sliding blocks (209) are respectively provided with an inclined surface, the upper side and the lower side of the outer parts of the left adjacent two first sliding blocks (209) and the lower side are respectively provided with a limiting groove, the equal rigid coupling in inboard of two adjacent first sliding blocks (209) in front and back has second toothed plate (210), and four second toothed plates (210) mesh with adjacent second gear (208) respectively, control second toothed plate (210) longitudinal symmetry setting of rigid coupling on two adjacent first sliding blocks (209), and two portions all are equipped with the support locking subassembly about annular support frame (201), and the support locking subassembly is used for spacing first sliding block (209) to remove.

2. The well lid structure with the cable online detection function for the cable tunnel wellhead as claimed in claim 1, wherein the supporting locking assembly comprises eight first limiting blocks (211), the eight first limiting blocks (211) are respectively slidably connected in the adjacent second sliding limiting grooves (2012), first springs (212) are fixedly connected between the eight first limiting blocks (211) and the annular supporting frame (201), and the eight first limiting blocks (211) are respectively matched with the adjacent second sliding limiting grooves (2012).

3. The manhole cover structure with the online cable detection function for the wellhead of the cable tunnel according to claim 1, wherein the inner wall of the lower frustum-shaped groove of the third fixing frame (308) is provided with a smooth inclined surface, the inclined surface of the outer side of the first pressing block (307) is provided with a smooth inclined surface for reducing the frictional resistance between the first pressing block (307) and the third fixing frame (308), and the pressing force of the plurality of first pressing blocks (307) is greater than that of the plurality of second springs (311).

4. The well lid structure with the cable online detection function for the cable tunnel wellhead as claimed in claim 1, wherein the self-locking mechanism comprises a third toothed plate (401), the third toothed plate (401) is fixedly connected to the right side of the outer wall of a third fixing frame (308), the right side of the fan cover (301) is rotatably connected with a second rotating rod (402), the left end of the second rotating rod (402) is fixedly connected with a third gear (403), the third gear (403) is meshed with the third toothed plate (401), the right end of the second rotating rod (402) is fixedly connected with a worm (404), the right part of the lower side of the well lid (102) is fixedly connected with two first round-head fixing frames (405), the two first round-head fixing frames (405) are symmetrically arranged in front and back directions, the two first round-head fixing frames (405) are both located between the two first fixing frames (205) at the right part, the third rotating rod (406) is rotatably connected between the two first round-head fixing frames (405), the rear end of the third rotating rod (406) is fixedly connected with a worm wheel (407), the worm wheel (404) is matched with the worm wheel (407), the third rotating rod (404), the sliding block (408) is fixedly connected with two sliding blocks (409) at the upper side of the second limiting block (409), and the sliding block (410) at the middle part of the second limiting block (409) are respectively connected with two sliding blocks (410), a fourth toothed plate (411) is fixedly connected to the middle of the fourth fixing frame (410), and the fourth toothed plate (411) is meshed with the fourth gear (408).

5. The well lid structure with the cable online detection function for the cable tunnel wellhead as claimed in claim 1, characterized by further comprising an unlocking mechanism, wherein the unlocking mechanism is arranged at the right portion of the annular supporting frame (201), the unlocking mechanism is used for opening the well lid (102) from the inside of the cable tunnel, the unlocking mechanism comprises two second extrusion blocks (501), the two second extrusion blocks (501) are arranged in an up-and-down symmetrical mode, the two second extrusion blocks (501) are respectively and fixedly connected to the front side face of the first sliding block (209) at the right rear side, the right portions of the opposite sides of the two second extrusion blocks (501) are respectively provided with an inclined face, the lower portion of the right side of the inner wall of the annular supporting frame (201) is fixedly connected with a second round-head fixing frame (502), a threaded rod (503) is rotatably connected to the second round-head fixing frame (502), the upper portion and the lower portion of the threaded rod (503) are opposite, the right portion of the inner wall of the annular supporting frame (201) is slidably connected with two third extrusion blocks (504), the two third extrusion blocks (504) are arranged in an up-and down symmetrical mode, the two third extrusion blocks (504) are respectively connected with the upper portion of the threaded rod (503), the upper portion and the lower portion of the upper portion of the annular supporting frame (201) are arranged to be convenient for lifting the left portion of the annular supporting frame from the left side for maintenance of the annular supporting frame, and lifting up of the annular supporting frame (201).

6. The well lid structure with the cable online detection function for the cable tunnel wellhead as claimed in claim 5, wherein the cover lifting assembly comprises a fifth toothed plate (505), the fifth toothed plate (505) is fixedly connected to the upper portion of the right side surface of the lower third extrusion block (504), a fourth rotating rod (506) is rotatably connected to the first sliding limiting groove (2011) at the right lower portion of the annular supporting frame (201), a fifth gear (507) is fixedly connected to the middle portion of the fourth rotating rod (506), the fifth gear (507) is engaged with the fifth toothed plate (505), a fifth fixing frame (508) is fixedly connected to the first sliding limiting groove (2011) at the right lower portion of the annular supporting frame (201), a second sliding block (509) is slidably connected to the fifth fixing frame (508), a third limiting block (510) is slidably connected to the upper portion of the second sliding block (509), a third spring (511) is fixedly connected between the third limiting block (510) and the second sliding block (509), a sixth sliding block (512) is fixedly connected to the rear side surface of the second fixing frame (509), a sixth limiting block (513) is connected to the right side surface of the annular supporting frame (201), a supporting rod (505) is in a staggered manner, and a supporting rod (102) is connected to the annular supporting frame (505), a fourth spring (514) is fixedly connected between the support rod (513) and the annular support frame (201).

7. The well lid structure with the cable on-line detection function for the wellhead of the cable tunnel as claimed in claim 6, wherein the upper side of the third limiting block (510) is provided with an inclined surface, the lower side of the support rod (513) is provided with an inclined surface, and the upper side of the third limiting block (510) is matched with the lower side of the support rod (513) for limiting the support rod (513) by the third limiting block (510).

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