Urban cable tunnel wellhead anti-falling device

Abstract

The invention relates to the technical field of cable tunnel wells, and discloses an urban cable tunnel wellhead anti-falling device which comprises a tunnel well body and a well lid, a baffle ring is fixedly arranged on the inner wall of the upper end of the tunnel well body, the well lid is arranged above the baffle ring, and a plurality of rotating rods are arranged on the two sides of the interior of the tunnel well body from top to bottom in a staggered mode. The two ends of the rotating rod are rotationally connected with the inner wall of the tunnel well body, the rod wall of the rotating rod is fixedly sleeved with a rotating block, a baffle is arranged on the side, away from the inner wall of the tunnel well body, of the rotating block, a connecting mechanism is arranged between the baffle and the rotating block, and the baffle is in limiting connection with the corresponding rotating block through the connecting mechanism. According to the city cable tunnel well mouth anti-falling device, when a cable tunnel well is opened, the multiple baffles which are arranged in a staggered mode can be automatically unfolded, the falling hidden danger can be greatly reduced, and station personnel can conveniently go down to the well for maintenance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cable tunnel well, in particular to a city cable tunnel well mouth anti-falling device. BACKGROUND

[0002] With the acceleration of urbanization process, power cable has become an important "lifeline" of urban energy supply. For example, State Grid Shandong Electric Power Company Jinan Power Supply Company, as one of the first high-voltage cable lean management demonstration units in China, the total amount of cable equipment maintains a rapid growth of 14% per year, the total length of all levels of cable is 6373 kilometers, and the number of work wells is 16374. The operation and maintenance of underground cable and channel are important guarantee for stable operation of power equipment, and the safety management of city cable well cover as a key component of cable operation and maintenance directly affects the safety of power grid and power supply reliability.

[0003] At present, the safety protection of city cable tunnel well mouth mainly depends on traditional well cover, but there are significant hidden dangers in the operation and maintenance process: when the operation and maintenance personnel open the well cover for downhole operation, the well mouth is in a completely open state, which is easy to cause falling accidents due to negligence or accident; at the same time, the existing well cover lacks targeted temporary protection measures, and only through warning signs or manual monitoring cannot completely avoid risks.

[0004] In the prior art, the research of intelligent well cover focuses on state monitoring (such as illegal opening, inclination, vibration alarm), communication networking and edge computing functions. For example, some intelligent well covers realize remote monitoring through NB-IoT, LoRa and other technologies, or integrate gas sensors to monitor the well environment, but no effective solution is proposed for the anti-falling demand under the open state of well mouth. In addition, the traditional anti-falling device (such as fixed protective net) has the problems of inconvenient storage and affecting downhole efficiency, which is difficult to adapt to the scene of high frequency operation and maintenance of cable tunnel. SUMMARY

[0005] (I) Technical problems solved In view of the shortcomings of the prior art, the present application provides a city cable tunnel well mouth anti-falling device which can automatically deploy multiple staggered baffle plates when the cable tunnel well is opened, which can greatly reduce the falling hazards and facilitate the downhole maintenance of workers, solving the problems proposed in the background art.

[0006] (II) Technical scheme In order to achieve the above object, the present application provides the following technical scheme: a city cable tunnel well head anti-falling device, including tunnel well body and well lid, the upper end inner wall of the tunnel well body is fixedly provided with a blocking ring, the well lid is arranged above the blocking ring, a plurality of rotating rods are staggered arranged from top to bottom on both sides of the inside of the tunnel well body, both ends of the rotating rod are rotatably connected with the inner wall of the tunnel well body, the rod wall of the rotating rod is fixedly sleeved with a rotating block, the side, away from the inner wall of the tunnel well body, of the rotating block is provided with a baffle, a connecting mechanism is arranged between the baffle and the rotating block, the baffle is limitingly connected with the corresponding rotating block through the connecting mechanism, a first transmission mechanism for driving the rotating rod to rotate is arranged below the well lid body, a fixed ring is fixedly arranged on the upper end outer wall of the tunnel well body, an annular groove is formed in the upper surface of the fixed ring, a sliding groove is formed in the groove bottom on both sides of the annular groove, a sliding block is slidably arranged in the sliding groove, a second transmission mechanism for driving the well lid to move is arranged on the upper side of the sliding block, a lead screw is threadedly sleeved in the sliding block, one end of the lead screw is rotatably connected with the inner wall of the sliding groove, and a driving mechanism for driving the lead screw to rotate is arranged on the inner side of the annular groove.

[0007] Preferably, the connecting mechanism comprises a wedge-shaped block and a limiting plate, a wedge-shaped groove is formed in the end side wall of the baffle close to the rotating plate, the wedge-shaped block is clamped in the wedge-shaped groove, one side of the wedge-shaped block is fixedly connected with the rotating block, a U-shaped plate is arranged below the lower side of the baffle close to the rotating plate, two limiting plates are fixedly arranged at both ends of the U-shaped plate, the two limiting plates are in abutment with one end of the corresponding wedge-shaped block, fixing blocks are arranged on both sides of the U-shaped plate, one side of the fixing block is fixedly connected with the baffle, a threaded rod is rotatably arranged between the two fixing blocks, and the middle end of the U-shaped plate is threadedly sleeved with the threaded rod.

[0008] Preferably, the first transmission mechanism comprises a first spur gear and a rack, the first spur gear is fixedly sleeved at one end of the rotating rod, the rack is meshingly arranged on one side of the first spur gear, vertical rods are fixedly arranged on both sides of the lower surface of the well lid, and one side of the plurality of racks is fixedly connected with the corresponding vertical rod.

[0009] Preferably, the second transmission mechanism comprises a push rod and a push block, the push block is fixedly arranged on the upper side of the sliding block, a recess is formed in the upper surface of the push block, the push rod is arranged between the push block and the well lid, mounting grooves are formed in both sides of the well lid, and both ends of the push rod are rotatably connected with the corresponding recess and mounting groove through shaft pins.

[0010] Preferably, the driving mechanism comprises a first bevel gear and a second bevel gear, the two sides of the annular groove are provided with transmission grooves, one end of the screw rod extends to the inside of the corresponding transmission groove, the two first bevel gears are fixedly sleeved on the one end of the corresponding screw rod in the transmission groove, the inner wall of the annular groove is rotationally provided with an internal gear ring, the second bevel gear is fixedly arranged on the lower side of the internal gear ring, the two first bevel gears are in meshing connection with the second bevel gear, the upper inner wall of one side of the annular groove is fixedly provided with a horizontal plate, the inside of the horizontal plate is rotationally sleeved with a transmission rod, the lower end of the transmission rod extends to the inside of the annular groove, the lower end of the transmission rod is fixedly sleeved with a second spur gear, the second spur gear is in meshing connection with the internal gear ring, the upper surface of the horizontal plate is fixedly provided with a motor, and the output end of the motor is fixedly connected with one end of the transmission rod.

[0011] Preferably, the longitudinal section of the sliding block and the sliding groove is rectangular, and the side wall of the sliding block is in abutment with the inner wall of the sliding groove.

[0012] Preferably, the two side inner walls of the U-shaped plate are in abutment with the side walls of the baffle.

[0013] Preferably, one end of the threaded rod is fixedly sleeved with a knob.

[0014] Preferably, the outer wall of the baffle is covered with a rubber pad.

[0015] (Three) beneficial effects Compared with the prior art, the present application provides a city cable tunnel wellhead anti-falling device, which has the following beneficial effects: 1. The city cable tunnel wellhead anti-falling device, by setting the first transmission mechanism, when the well cover is opened, the vertical rod drives the rack to move, the rack is in meshing transmission with the first spur gear, the rotating rod is rotated, and then the rotating block and the baffle are rotated, the automatic expansion of the multiple staggered baffles is realized, the protective barrier is formed, and the falling hidden danger is reduced; at the same time, the staggered baffles will not completely close the wellhead, which is convenient for workers to maintain in the well.

[0016] 2. The city cable tunnel wellhead anti-falling device, the wedge-shaped block and the wedge-shaped slot are connected to preliminarily fix the baffle and the rotating block, the rotating screw rod drives the U-shaped plate to move, the limiting plate abuts against the wedge-shaped block, further strengthening the fixation, ensuring the stability of the baffle in the use process, and facilitating the disassembly and replacement of the baffle. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A city cable tunnel wellhead anti-falling device structure schematic diagram is provided for the present application; Figure 2 A part A structure enlarged view is provided for Figure 1 Figure 3 A​Figure 1 a B part structure of the enlarged view of the tunnel well body; Figure 4 is Figure 2 the connecting structure of the U-shaped plate and the limiting plate.

[0018] In the figure: 1, tunnel well body; 2, blocking ring; 3, well lid; 4, vertical rod; 5, rotating rod; 6, rotating block; 7, wedge block; 8, blocking plate; 9, first straight gear; 10, rack; 11, second straight gear; 12, fixed block; 13, threaded rod; 14, U-shaped plate; 15, blocking plate; 16, push block; 17, shaft pin; 18, sliding block; 19, fixed ring; 20, lead screw; 21, inner tooth ring; 22, second bevel gear; 23, first bevel gear; 24, transmission rod; 25, cross plate; 26, motor. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0020] Please refer to Figures 1-4 A city cable tunnel well mouth anti-falling device, including tunnel well body 1 and well lid 3, the upper end of tunnel well body 1 inner wall is fixedly provided with blocking ring 2, well lid 3 is set in the upper of blocking ring 2, the inside of tunnel well body 1 both sides are staggered from top to bottom and are provided with a plurality of rotating rods 5, both ends of rotating rod 5 are rotatably connected with the inner wall of tunnel well body 1, the rod wall of rotating rod 5 is fixedly sleeved with rotating block 6, the side away from the inner wall of tunnel well body 1 of rotating block 6 is provided with blocking plate 8, the outer wall of blocking plate 8 is covered with rubber pad, which can play a certain buffering effect, connecting mechanism is arranged between blocking plate 8 and rotating block 6, blocking plate 8 is limitingly connected with corresponding rotating block 6 through connecting mechanism, the lower of well lid 3 main body is provided with first transmission mechanism for driving rotating rod 5 to rotate, the upper end of outer wall of tunnel well body 1 is fixedly provided with fixed ring 19, the upper surface of fixed ring 19 is provided with annular groove, the both sides groove bottom of annular groove are provided with sliding groove, sliding block 18 is slidably arranged in the inside of sliding groove, the longitudinal section of sliding block 18 and sliding groove are both rectangular, the side wall of sliding block 18 is in abutment with the inner wall of sliding groove, so that sliding block 18 cannot rotate, that is, it can stably slide, the upper side of sliding block 18 is provided with second transmission mechanism for driving well lid 3 to move, the inside of sliding block 18 is threadedly sleeved with lead screw 20, one end of lead screw 20 is rotatably connected with the inner wall of sliding groove, the inside of annular groove is provided with driving mechanism for driving lead screw 20 to rotate.

[0021] Please refer to Figures 1-4The connecting mechanism comprises a wedge-shaped block 7 and a limiting plate 15, a wedge-shaped groove is formed in the side wall of the end of the baffle plate 8 close to the rotating block 6, the wedge-shaped block 7 is clamped in the wedge-shaped groove, one side of the wedge-shaped block 7 is fixedly connected with the rotating block 6, a U-shaped plate 14 is arranged below the lower side of the baffle plate 8 close to the rotating block 6, two limiting plates 15 are fixedly arranged at the two ends of the U-shaped plate 14, the two limiting plates 15 are in abutment with one end of the corresponding wedge-shaped block 7, a fixed block 12 is arranged at each side of the U-shaped plate 14, one side of the fixed block 12 is fixedly connected with the baffle plate 8, a threaded rod 13 is rotatably arranged between the two fixed blocks 12, the middle end of the U-shaped plate 14 is threadedly sleeved with the threaded rod 13, a knob is fixedly sleeved with one end of the threaded rod 13, the threaded rod 13 is conveniently rotated, and the inner walls of the two sides of the U-shaped plate 14 are in abutment with the side walls of the baffle plate 8, so that the U-shaped plate 14 cannot rotate, that is, can stably slide.

[0022] Please refer to Figures 1-4 The first transmission mechanism comprises a first spur gear 9 and a rack 10, the first spur gear 9 is fixedly sleeved with one end of the rotating rod 5, the rack 10 is meshingly arranged on one side of the first spur gear 9, and vertical rods 4 are fixedly arranged on the lower surfaces of the two sides of the manhole cover 3. One side of the plurality of racks 10 is fixedly connected with the corresponding vertical rod 4.

[0023] Please refer to Figures 1-4 The second transmission mechanism comprises a push rod and a push block 16, the push block 16 is fixedly arranged on the upper side of the sliding block 18, a groove is formed in the upper surface of the push block 16, the push rod is arranged between the push rod and the manhole cover 3, mounting grooves are formed in the two sides of the manhole cover 3, and the two ends of the push rod are rotatably connected with the corresponding grooves and mounting grooves through shaft pins 17.

[0024] Please refer to Figures 1-4 The driving mechanism comprises a first bevel gear 23 and a second bevel gear 22, a transmission groove is formed in the groove bottom of each side of the annular groove, one end of the lead screw 20 extends into the corresponding transmission groove, the two first bevel gears 23 are fixedly sleeved with the one end of the corresponding lead screw 20 located in the transmission groove, an internal gear ring 21 is rotatably arranged on the inner wall of the annular groove, the second bevel gear 22 is fixedly arranged on the lower side of the internal gear ring 21, the two first bevel gears 23 are meshingly connected with the second bevel gear 22, a horizontal plate 25 is fixedly arranged on the upper side inner wall of one side of the annular groove, a transmission rod 24 is rotatably sleeved in the horizontal plate 25, the lower end of the transmission rod 24 extends to the inner side of the annular groove, the second spur gear 11 is fixedly sleeved with the lower end of the transmission rod 24, the second spur gear 11 is meshingly connected with the internal gear ring 21, the motor 26 is fixedly arranged on the upper surface of the horizontal plate 25, and the output end of the motor 26 is fixedly connected with one end of the transmission rod 24.

[0025] In summary, the city cable tunnel wellhead anti-falling device, when in use, the motor 26 is started, the motor 26 drives the transmission rod 24 to rotate, the second spur gear 11 at the lower end of the transmission rod 24 rotates, the second spur gear 11 meshes with the inner tooth ring 21, drives the inner tooth ring 21 to rotate along the inner wall of the annular groove, the second bevel gear 22 at the lower side of the inner tooth ring 21 rotates synchronously, the second bevel gear 22 meshes with the first bevel gear 23 on both sides, drives the two lead screws 20 to rotate; When the lead screw 20 rotates, the sliding block 18 cannot rotate due to the limitation of the sliding groove, but can only slide horizontally along the lead screw 20, the push block 16 on the sliding block 18 pushes the well lid 3 through the push rod, so that the well lid 3 moves in the horizontal direction and moves away from above the blocking ring 2, realizing the opening of the wellhead; During the movement of the well lid 3, the vertical rod 4 on the lower surface thereof drives the rack 10 to move synchronously, the rack 10 meshes with the first spur gear 9 to drive the rotating rod 5 to rotate, the rotating block 6 on the rotating rod 5 rotates synchronously, the blocking plate 8 is driven to rotate through the clamping relationship between the wedge-shaped block 7 and the wedge-shaped groove, since the rotating rod 5 is staggered from top to bottom on both sides of the tunnel well body 1, the blocking plate 8 forms a staggered distribution of protective barriers after rotating, covering most of the area of the wellhead, effectively reducing the risk of falling, and the staggered gap facilitates the workers to go down the well; If the blocking plate 8 needs to be replaced, the knob on the threaded rod 13 is rotated, the threaded rod 13 drives the U-shaped plate 14 to move, so that the limiting plate 15 is separated from the wedge-shaped block 7, the blocking plate 8 can be removed from the rotating block 6, after replacing the new blocking plate, the reverse operation is performed, and the limiting plate 15 is clamped against the wedge-shaped block 7 again to complete the fixation; When closing the wellhead, the motor 26 reverses rotation, the drive mechanism drives the well lid 3 to reset, the vertical rod 4 and the rack 10 move reversely, the first spur gear 9 drives the rotating rod 5 to reverse, so that the blocking plate 8 is retracted into the inner wall of the tunnel well body 1, without affecting the closure of the well lid 3, the setting of the rubber pad can reduce the collision noise when the blocking plate 8 rotates, and at the same time, the safety of protection is enhanced; The device realizes synchronous operation of opening the well lid and unfolding the blocking plate through mechanical linkage, without the need for additional manual setting of protection measures, which not only guarantees the safety of operation and maintenance, but also improves the efficiency of going down the well, and is suitable for high-frequency operation and maintenance scenes of city cable tunnels.

[0026] It is to be understood that the terminology "including", "comprising", or other derivatives from the term "contain" are inclusive and that, in addition to the stated combinations, other combinations are also contemplated. It is to be further understood that the term "comprising" or "comprises" does not exclude other elements being present in addition to those listed. It is to be further understood that the term "including" or "includes" does not exclude other elements being present in addition to those listed.

[0027] While embodiments of the application have been shown and described, it is to be understood that the application is not limited to the details of the embodiments described, since the scope of the application is defined with respect to the appended claims.

Claims

1. An anti-fall device for a city cable tunnel wellhead, comprising a tunnel well body (1) and a well cover (3), characterized in that: A retaining ring (2) is fixedly provided on the inner wall of the upper end of the tunnel shaft (1), and the manhole cover (3) is arranged above the retaining ring (2). A plurality of rotating rods (5) are staggeredly provided on both sides of the interior of the tunnel shaft (1) from top to bottom. Both ends of the rotating rods (5) are rotatably connected to the inner wall of the tunnel shaft (1). A rotating block (6) is fixedly sleeved on the rod wall of the rotating rod (5). A baffle (8) is provided on the side of the rotating block (6) away from the inner wall of the tunnel shaft (1). A connecting mechanism is provided between the baffle (8) and the rotating block (6). The baffle (8) is limit-connected to the corresponding rotating block (6) through the connecting mechanism. The manhole cover ( 3) A first transmission mechanism for driving the rotating rod (5) to rotate is provided below the main body, a fixing ring (19) is fixedly provided on the outer wall of the upper end of the tunnel shaft (1), an annular groove is provided on the upper surface of the fixing ring (19), and a sliding groove is provided on the bottom of both sides of the annular groove, a slider (18) is provided inside the sliding groove for sliding, and a second transmission mechanism for driving the manhole cover (3) to move is provided on the upper side of the slider (18), a screw rod (20) is sleeved on the internal thread of the slider (18), one end of the screw rod (20) is rotatably connected to the inner wall of the sliding groove, and a driving mechanism for driving the screw rod (20) to rotate is provided on the inner side of the annular groove.

2. The urban cable tunnel wellhead anti-fall device according to claim 1, characterized in that: The connecting mechanism includes a wedge block (7) and a limiting plate (15), a wedge groove is provided on the side wall of one end of the baffle (8) close to the rotating block (6), the wedge block (7) is clamped inside the wedge groove, one side of the wedge block (7) is fixedly connected to the rotating block (6), a U-shaped plate (14) is provided below the lower side of the baffle (8) close to the rotating block (6), two limiting plates (15) are fixedly provided at both ends of the U-shaped plate (14), the two limiting plates (15) are in conflict with one end of the corresponding wedge block (7), fixed blocks (12) are provided on both sides of the U-shaped plate (14), one side of the fixed block (12) is fixedly connected to the baffle (8), a threaded rod (13) is rotatably provided between the two fixed blocks (12), and the middle end of the U-shaped plate (14) is threadedly sleeved with the threaded rod (13).

3. The urban cable tunnel wellhead anti-fall device according to claim 1, characterized in that: The first transmission mechanism comprises a first spur gear (9) and a rack (10), wherein the first spur gear (9) is fixedly sleeved on one end of the rotating rod (5), and the rack (10) is meshedly arranged on one side of the first spur gear (9). Vertical rods (4) are fixedly arranged on both sides of the lower surface of the manhole cover (3), and one side of a plurality of the racks (10) is fixedly connected to the corresponding vertical rods (4).

4. The urban cable tunnel wellhead anti-fall device according to claim 1, characterized in that: The second transmission mechanism includes a push rod and a push block (16), wherein the push block (16) is fixedly arranged on the upper side of the slider (18), and a groove is provided on the upper surface of the push block (16). The push rod is arranged between the push rod and the manhole cover (3), and mounting grooves are provided on both sides of the manhole cover (3). Both ends of the push rod are rotatably connected to the corresponding groove and mounting groove through an axle pin (17).

5. The urban cable tunnel wellhead anti-fall device according to claim 1, characterized in that: The driving mechanism comprises a first bevel gear (23) and a second bevel gear (22), the bottoms of both sides of the annular groove are provided with transmission grooves, one end of the screw rod (20) extends into the interior of the corresponding transmission groove, the two first bevel gears (23) are fixedly sleeved on one end of the corresponding screw rod (20) located in the transmission groove, the inner wall of the annular groove is rotatably provided with an inner gear ring (21), the second bevel gear (22) is fixedly provided on the lower side of the inner gear ring (21), and the two first bevel gears (23) are both connected to the second bevel gear (22) ) are meshedly connected, a transverse plate (25) is fixedly provided on the upper inner wall of the annular groove on one side, a transmission rod (24) is rotatably sleeved inside the transverse plate (25), the lower end of the transmission rod (24) extends to the inner side of the annular groove, a second spur gear (11) is fixedly sleeved on the lower end of the transmission rod (24), the second spur gear (11) is meshedly connected with the inner gear ring (21), a motor (26) is fixedly provided on the upper surface of the transverse plate (25), and the output end of the motor (26) is fixedly connected to one end of the transmission rod (24).

6. The urban cable tunnel wellhead anti-fall device according to claim 1, characterized in that: The longitudinal sections of the slider (18) and the chute are both rectangular, and the side wall of the slider (18) abuts against the inner wall of the chute.

7. The urban cable tunnel wellhead anti-fall device according to claim 2, characterized in that: The inner walls on both sides of the U-shaped plate (14) are in contact with the side walls of the baffle (8).

8. The urban cable tunnel wellhead anti-fall device according to claim 2, characterized in that: One end of the threaded rod (13) is fixedly sleeved with a knob.

9. The urban cable tunnel wellhead anti-fall device according to claim 2, characterized in that: The outer wall of the baffle (8) is covered with a rubber pad.

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