A smart manhole cover lock

Abstract

The utility model relates to a smart manhole cover lock, which includes a manhole cover, a cover ring and a lock for locking the manhole cover on the cover ring, wherein the lock is installed on the manhole cover, and the lock includes a driving stepper motor, a three-claw telescopic lock tongue, a manual lock core, a signal enhancement antenna and a controller; a spindle drive disk and a spindle sector gear are provided on the output shaft of the driving stepper motor, the three-claw telescopic lock tongue is fixed on the spindle drive disk, keyholes are provided on the upper and lower ends of the manual lock core, a lock core gear is provided on the manual lock core, and the lock core gear is meshed with the sector gear. The smart manhole cover lock overcomes the defects of the existing electronic manhole cover locks such as a single lock control mode and unstable communication function. It has a manual control function, improves the controllability of the lock and the safety of the manhole cover, and realizes the uplink and downlink enhancement of communication signals, while increasing the protection of the core components of the lock, significantly improving the operation stability and service life of the lock.

Description

Technical Field

[0001] The utility model relates to the technical field of manhole covers, and in particular to a smart manhole cover lock. Background Art

[0002] Electronic manhole cover locks are the second layer of manhole cover installed under the outermost manhole cover above the pipeline. Such manhole cover equipment is widely used in electricity, water conservancy, gas, transportation and other fields. It can connect to third-party platforms such as underground pipeline security monitoring systems to provide safe and reliable data upload. Existing electronic manhole cover locks have the following shortcomings:

[0003] (1) The lock control method is single and lacks manual opening function. When the signal is poor, the lock cannot be opened, causing inconvenience and danger to the staff, especially the underground operators;

[0004] (2) The communication function is unstable and the signal control is limited. Due to the great influence of the environment, bad weather often causes the downlink control to not be executed and the uplink information cannot be uploaded in time. Utility Model Content

[0005] The technical problem to be solved by the utility model is: to overcome the defects of the existing electronic manhole cover locks such as the single lock control mode and the unstable communication function, and to provide a smart manhole cover lock with a manual control function, which improves the controllability of the lock and the safety of the manhole cover, and realizes the uplink and downlink enhancement of the communication signal, while increasing the protection of the core components of the lock, significantly improving the operating stability and service life of the lock.

[0006] The smart manhole cover lock includes a manhole cover, a cover ring and a lock for locking the manhole cover on the cover ring, wherein the lock is installed on the manhole cover, and the lock includes a driving stepper motor, a three-claw telescopic lock tongue, a manual lock core, a signal enhancement antenna and a controller; a spindle driving disk and a spindle sector gear are provided on the output shaft of the driving stepper motor, the three-claw telescopic lock tongue is fixed on the spindle driving disk, keyholes are provided at the upper and lower ends of the manual lock core, a lock core gear is provided on the manual lock core, and the lock core gear is meshed with the sector gear.

[0007] Furthermore, the three-claw telescopic lock tongue includes a central torsion disk, three groups of connecting arms hinged on the central torsion disk, and a columnar lock tongue hinged at the end of the connecting arm; the connecting arms are radially and circumferentially equidistantly connected to the central torsion disk, and each group of connecting arms includes a pair of curved arms.

[0008] Furthermore, the cover ring is provided with three brackets for supporting the manhole cover, the arrangement positions of the three brackets correspond to the positions of the three lock tongues of the three-claw telescopic lock tongue, and the brackets are provided with locking holes adapted to the lock tongues.

[0009] Optimized, the controller includes a main control chip, a cover opening sensor, a wireless communication module, a Bluetooth module and an expansion interface module; the output end of the main control chip is connected to the stepper controller that drives the stepper motor, and the wireless communication module and the Bluetooth module are connected to the signal enhancement antenna; the cover opening sensor is connected to the input end of the main control chip, and the wireless communication module, the Bluetooth module, the expansion interface module are serially connected to the main control chip.

[0010] Optimized, the smart manhole cover lock also includes a lock cover, the lock cover is fixed on the manhole cover, the driving stepper motor, the central torsion plate of the three-claw telescopic lock tongue and the inner side of the connecting arm, the manual lock core, the signal enhancement antenna and the controller are all buckled in the lock cover, the lower part of the lock cover is provided with a clamping port, and the lower end of the manual lock core is provided with a buckle for clamping the lock cover in addition to the clamping port. It is used to protect the main parts of the lock.

[0011] The utility model discloses a smart manhole cover lock, which overcomes the defects of existing electronic manhole cover locks such as single lock control mode and unstable communication function. It has a manual control function, which improves the controllability of the lock and the safety of the manhole cover, and realizes the uplink and downlink enhancement of communication signals, while increasing the protection of the core components of the lock, significantly improving the operating stability and service life of the lock. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The following is a further description of the utility model of a smart manhole cover lock in conjunction with the accompanying drawings:

[0013] Figure 1 This is a three-dimensional structural diagram of the smart manhole cover lock when viewed from above;

[0014] Figure 2 This is a schematic diagram of the three-dimensional structure of the smart manhole cover lock when viewed from above;

[0015] Figure 3 yes Figure 2 Exploded view of;

[0016] Figure 4 yes Figure 3 Further exploded view of;

[0017] Figure 5 This is a schematic diagram of the structure of the lock described in this smart manhole cover lock (lock cover removed)

[0018] Figure 6 This is a block diagram of the logical structure and connection principle of the controller of the smart manhole cover lock.

[0019] In the figure:

[0020] 1- Manhole cover;

[0021] 2-cover ring; 21-bracket; 211-locking hole;

[0022] 3-lock; 31-driving stepper motor, 32-three-claw telescopic lock tongue, 33-manual lock cylinder, 34-signal enhancement antenna; 311-spindle drive disk, 312-spindle sector gear, 321-central torsion disk, 322-connecting arm, 323-lock tongue, 331-keyhole, 332-lock cylinder gear, 333-buckle;

[0023] 4-controller; 41-main control chip, 42-cover opening sensor, 43-wireless communication module, 44-Bluetooth module, 45-expansion interface module;

[0024] 5-lock cover; 51-fixing port. DETAILED DESCRIPTION

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] In the description of the present invention, it should be understood that the terms "left", "right", "front", "back", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0027] The technical solution of the utility model is further described below with specific embodiments, but the protection scope of the utility model is not limited to the following embodiments.

[0028] Implementation method 1: Figures 1 to 5As shown, the smart manhole cover lock includes a manhole cover 1, a cover ring 2 and a lock 3 for locking the manhole cover 1 on the cover ring 2, wherein the lock 3 is installed on the manhole cover 1, and the lock 3 includes a driving stepper motor 31, a three-claw telescopic lock tongue 32, a manual lock core 33, a signal enhancement antenna 34 and a controller 4; a spindle driving disk 311 and a spindle sector gear 312 are provided on the output shaft of the driving stepper motor 31, the three-claw telescopic lock tongue 32 is fixed on the spindle driving disk 311, and keyholes 331 are provided on the upper and lower ends of the manual lock core 33, and a lock core gear 332 is provided on the manual lock core 33, and the lock core gear 332 is meshed with the sector gear 312. When controlled electrically, the controller controls the rotation of the stepper motor spindle, and the spindle drive disk on the spindle controls the extension and retraction of the lock tongue of the three-claw telescopic lock tongue, thereby realizing the electric locking and unlocking between the manhole cover and the cover ring; when controlled manually, by inserting a paired key into the manual lock cylinder, the lock cylinder gear is operated to drive the spindle fan gear to rotate, and the transmission is transmitted to the spindle. The spindle drive disk on the spindle controls the extension and retraction of the lock tongue of the three-claw telescopic lock tongue, thereby realizing the manual locking and unlocking between the manhole cover and the cover ring.

[0029] Implementation 2: The three-claw telescopic lock tongue 32 of the smart manhole cover lock includes a central torsion disk 321, three groups of connecting arms 322 hinged on the central torsion disk 321, and a columnar lock tongue 323 hinged on the end of the connecting arm 322; the connecting arms 322 are radially and circumferentially equidistantly connected to the central torsion disk 321, and each group of connecting arms 322 includes a pair of curved arms. The stepper motor or manual lock core is driven to drive the central torsion disk to rotate, and the lock tongue is driven to extend and retract through the connecting arm. The cover ring 2 is provided with three brackets 21 for supporting the manhole cover 1. The three brackets 21 are arranged at positions corresponding to the positions of the three lock tongues 323 of the three-claw telescopic lock tongue 32, and the bracket 21 is provided with a locking hole 211 adapted to the lock tongue 323. The remaining structures and components are as described in Implementation 1 and will not be described again.

[0030] Implementation method 3: Figure 6As shown, the controller 4 of the smart manhole cover lock includes a main control chip 41, a cover opening sensor 42, a wireless communication module 43, a Bluetooth module 44 and an expansion interface module 45; the output end of the main control chip 41 is connected to the stepping controller of the driving stepping motor 31, and the wireless communication module 43 and the Bluetooth module 44 are connected to the signal enhancement antenna 34; the cover opening sensor 42 is connected to the input end of the main control chip 41, and the wireless communication module 43, the Bluetooth module 44, and the expansion interface module 45 are serially connected to the main control chip 41. The cover opening sensor can select an angle sensor or a displacement sensor, which collects the cover opening signal and controls the wireless communication module or the Bluetooth module through the main control chip to send the signal to the control end; the wireless communication module and the Bluetooth module are used to receive the control command of the control end, and send the control signal to the driving stepping motor through the main control chip; the expansion interface module adopts an RS485 interface module, which is used to expand the connection of other types of sensors such as water level and gas concentration, positioning modules such as GPS, or to link with other pipe network facilities to enrich the functionality of the equipment. The remaining structures and components are as described in Implementation 1 and will not be described again.

[0031] Embodiment 4: The smart manhole cover lock also includes a lock cover 5, which is fixed on the manhole cover 1. The driving stepper motor 31, the central torsion plate 321 of the three-claw telescopic lock tongue 32 and the inner side of the connecting arm 322, the manual lock core 33, the signal enhancement antenna 34 and the controller 4 are all covered and buckled in the lock cover 5. The lower part of the lock cover 5 is provided with a clamping port 51, and the lower end of the manual lock core 33 is provided with a clamping port 333 for clamping the lock cover 5 in addition to the clamping port 51. It is used to cover the main parts of the lock. The remaining structures and components are as described in Embodiment 1 and will not be described again.

[0032] During operation: under electric control, the controller controls the rotation of the main shaft of the stepper motor, and the main shaft driving disk on the main shaft controls the extension and retraction of the lock tongue of the three-claw telescopic lock tongue, thereby realizing the electric locking and unlocking between the manhole cover and the cover ring; under manual control, by inserting the paired key into the manual lock cylinder, the lock cylinder gear is operated to drive the main shaft fan gear to rotate, and the transmission is transmitted to the main shaft, and the main shaft driving disk on the main shaft controls the extension and retraction of the lock tongue of the three-claw telescopic lock tongue, thereby realizing the manual locking and unlocking between the manhole cover and the cover ring.

[0033] This smart manhole cover lock overcomes the defects of existing electronic manhole cover locks such as single lock control method and unstable communication function. It has a manual control function, which improves the controllability of the lock and the safety of the manhole cover, and realizes the uplink and downlink enhancement of communication signals. At the same time, it increases the protection of the core components of the lock, significantly improving the operating stability and service life of the lock.

[0034] The above description shows the main features, basic principles, and advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments or embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, the above embodiments or embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the utility model. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0035] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A smart manhole cover lock, characterized by: The invention comprises a manhole cover (1), a cover ring (2) and a lock (3) for locking the manhole cover (1) on the cover ring (2), wherein: The lock (3) is installed on the manhole cover (1), and comprises a driving stepping motor (31), a three-claw telescopic lock tongue (32), a manual lock core (33), a signal enhancement antenna (34) and a controller (4); a main shaft driving disk (311) and a main shaft sector gear (312) are arranged on the output shaft of the driving stepping motor (31), the three-claw telescopic lock tongue (32) is fixed on the main shaft driving disk (311), the manual lock core (33) is provided with a key hole (331) at the upper and lower ends, and a lock core gear (332) is arranged on the manual lock core (33), and the lock core gear (332) is meshed with the sector gear (312).

2. The smart manhole cover lock according to claim 1 is characterized in that: The three-claw telescopic lock tongue (32) comprises a central torsion disk (321), three groups of connecting arms (322) hinged on the central torsion disk (321), and a columnar lock tongue (323) hinged on the ends of the connecting arms (322); the connecting arms (322) are radially connected to the central torsion disk (321) at equal intervals in the circumferential direction, and each group of connecting arms (322) comprises a pair of curved arms.

3. The smart manhole cover lock according to claim 2 is characterized in that: The cover ring (2) is provided with three brackets (21) for supporting the manhole cover (1); the three brackets (21) are arranged at positions corresponding to the positions of three locking tongues (323) of the three-claw telescopic locking tongue (32); and the brackets (21) are provided with locking holes (211) adapted to the locking tongues (323).

4. The smart manhole cover lock according to claim 3 is characterized in that: The controller (4) comprises a main control chip (41), a cover opening sensor (42), a wireless communication module (43), a Bluetooth module (44) and an expansion interface module (45); the output end of the main control chip (41) is connected to the stepping controller driving the stepping motor (31), and the wireless communication module (43) and the Bluetooth module (44) are connected to the signal enhancement antenna (34); the cover opening sensor (42) is connected to the input end of the main control chip (41), and the wireless communication module (43), the Bluetooth module (44) and the expansion interface module (45) are connected in series with the main control chip (41).

5. The smart manhole cover lock according to any one of claims 1 to 4, characterized in that: The invention also comprises a lock cover (5), wherein the lock cover (5) is fixed on the manhole cover (1), the driving stepping motor (31), the central torsion plate (321) of the three-claw telescopic lock tongue (32) and the inner side of the connecting arm (322), the manual lock core (33), the signal enhancement antenna (34) and the controller (4) are all covered and buckled in the lock cover (5), the lower part of the lock cover (5) is provided with a clamping opening (51), and the lower end of the manual lock core (33) is provided with a clamping opening (333) for clamping the lock cover (5) in addition to the clamping opening (51).

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