Intelligent well lid lock

Abstract

The invention provides an intelligent well lid lock. The intelligent well lid lock comprises a shell; the rotating shaft mechanism is arranged in the shell, and the rotating shaft mechanism can rotate relative to the shell so as to drive the locking claw to move to unlock and lock the well lid; when the well lid is locked, the first-stage locking mechanism is in an idle state, and the second-stage locking mechanism is in a locked state; when the well lid is unlocked, the first-stage locking mechanism is in an unlocking state, the second-stage locking mechanism is in an unlocking state, and the rotating shaft mechanism is rotated through the handle to drive the locking claw to unlock the well lid. When the well lid is locked, the second-stage locking mechanism abuts against the rotating shaft mechanism and locks and limits the rotating shaft mechanism, and when the well lid is unlocked, the second-stage locking mechanism bears and absorbs deviation acting force generated by rotation or shaking of the rotating shaft mechanism and the locking claw. According to the invention, the secondary locking mechanism still abuts against the rotating shaft mechanism after being unlocked, and during unlocking, the rotating shaft mechanism is rotated to extrude and push the secondary locking mechanism to retract, so that the primary locking mechanism is reliably in an idling state or an unlocking state, and the condition of failure of unlocking and locking operation is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of manhole cover locks, and in particular to an intelligent manhole cover lock. Background Art

[0002] Manhole cover locks are a type of management device that is frequently used in places such as communication pipe network combined wells, power pipeline combined wells, and special wells for urban integrated pipe galleries. They are designed to prevent people from entering the pipeline wellhead without authorization.

[0003] In the prior art, when the manhole cover lock is unlocked, the handle is generally used to drive the rotating shaft to move the locking claw, and the locking tongue is used to restrict the rotating shaft from unlocking, thereby realizing the unlocking function of the manhole cover lock. Since the locking claw in the manhole cover lock has a relatively large gravity, external forces such as vibration will be generated during the unlocking process of the rotating shaft driven by the handle, so that the rotating shaft of the manhole cover lock is prone to deflection. After the rotating shaft is offset, the clutch mechanism will deviate from the preset matching position. At this time, the clutch and the rotating shaft cannot cooperate and link, and the unlocking operation is prone to failure. Summary of the invention

[0004] The technical problem to be solved by the present application is to provide an intelligent manhole cover lock, which has a two-stage locking function. The secondary locking mechanism can be unlocked only after the primary locking mechanism is unlocked, and the secondary locking mechanism is still in contact with the shaft mechanism after being unlocked. When unlocking, the shaft mechanism is rotated to squeeze and push the secondary locking mechanism back, and the secondary locking mechanism bears and absorbs the offset force generated by the rotation or shaking of the shaft mechanism and the locking claw, so that the primary locking mechanism can be reliably in an idling state or an unlocked state, reducing the failure of the unlocking operation.

[0005] In order to solve the above technical problems, this application adopts the following technical solutions:

[0006] The present application provides an intelligent manhole cover lock, comprising: a shell; a rotating shaft mechanism, which is arranged in the shell, with a first end connected to a handle and a second end connected to a locking claw, and the rotating shaft mechanism can rotate relative to the shell to drive the locking claw to move to unlock the manhole cover; a primary locking mechanism and a secondary locking mechanism are sequentially arranged along the direction from the first end to the second end of the rotating shaft mechanism, when the manhole cover is locked, the primary locking mechanism is in an idling state, and the secondary locking mechanism is in a locked state; when the manhole cover is unlocked, the primary locking mechanism is in an unlocking state. state, the secondary locking mechanism is in an unlocked state, the rotating shaft mechanism is rotated by the handle to drive the locking claw to release the lock of the manhole cover; when the manhole cover is locked, the secondary locking mechanism abuts against the rotating shaft mechanism and locks it to a limit position, and when the manhole cover is unlocked, the rotating shaft mechanism is rotated to squeeze and push the secondary locking mechanism to retract; the secondary locking mechanism bears and absorbs the offset force generated by the rotation or shaking of the rotating shaft mechanism and the locking claw, so that the primary locking mechanism is reliably in an idling state or an unlocked state.

[0007] As an embodiment, the primary locking mechanism includes a first locking tongue; the rotating shaft mechanism includes a clutch shaft and a rotating shaft, the clutch shaft as the first end of the rotating shaft mechanism is used to connect with the handle, the clutch shaft is arranged in the rotating shaft, and the rotating shaft as the second end of the rotating shaft mechanism is used to connect with the locking claw; when the primary locking mechanism is in an idling state, the first locking tongue locks the rotating shaft so that the clutch shaft can rotate independently relative to the rotating shaft, and when the primary locking mechanism is in an unlocked state, the first locking tongue releases the lock on the rotating shaft so that the clutch shaft and the rotating shaft rotate synchronously.

[0008] As an embodiment, the smart manhole cover lock also includes a shaft housing, which is connected to the housing; the clutch shaft and the rotating shaft are arranged in the shaft housing; the shaft housing is provided with a first through hole, and the rotating shaft is provided with a second through hole; the clutch shaft is provided with a accommodating chamber; the shaft mechanism also includes an elastic component, which is located in the accommodating chamber; when the primary locking mechanism is in an idling state, the first end of the first lock tongue penetrates into the first through hole and the second through hole in turn, and abuts against the elastic component, and the elastic component is compressed in the accommodating chamber so that the clutch shaft can rotate independently relative to the rotating shaft; when the primary locking mechanism is in an unlocked state, the first lock tongue moves away from the first through hole and the second through hole, and the elastic component penetrates into the second through hole and is connected to the rotating shaft, so that the clutch shaft and the rotating shaft rotate synchronously.

[0009] As an embodiment, the primary locking mechanism also includes a rack connected to the first lock tongue and a driving member, the rack is connected to the driving member, the driving member drives the rack to move relative to the rotating shaft mechanism, and the rack drives the first lock tongue to move synchronously.

[0010] As an embodiment, the primary locking mechanism further includes a first elastic member, and two ends of the first elastic member are respectively abutted against the first locking tongue and the rack.

[0011] As an embodiment, the first-level locking mechanism also includes a lock tongue shell, which is provided with a accommodating cavity for accommodating the first lock tongue and a sliding groove for sliding the rack; the first-level locking mechanism also includes a limit member, which is connected to the lock tongue shell and is used to limit and stop the rack.

[0012] As an embodiment, the secondary locking mechanism includes a second lock tongue. When the secondary locking mechanism is in a locked state, the second lock tongue abuts against the rotating shaft and locks it to a limit position. When the secondary locking mechanism is in an unlocked state, the locking claw rotates or shakes driven by the rotating shaft, generating an offset force on the rotating shaft. The rotating shaft squeezes and pushes the second lock tongue to retract, so that the second lock tongue bears and absorbs the offset force, ensuring that the clutch shaft and the rotating shaft are located in preset positions, so that the primary locking mechanism is reliably in an idling state or an unlocked state.

[0013] As an embodiment, a third through hole is provided on the rotating shaft housing, and a groove is provided on the outer peripheral wall of the rotating shaft, and the third through hole is coaxial with the groove; in a locked state, the second locking tongue passes through the third through hole and abuts against the groove to limit the rotation of the rotating shaft; in an unlocked state, when the rotating shaft rotates, the second locking tongue can be disengaged from the groove.

[0014] As an implementation manner, an end of the second locking tongue facing away from the rotating shaft is provided with a guide slope.

[0015] As an embodiment, the secondary locking mechanism also includes a linkage mechanism for limiting the movement of the second lock tongue. When the smart manhole cover lock is unlocked, the first lock tongue moves away from the rotating shaft mechanism, pushing the linkage mechanism to unlock and limit the second lock tongue.

[0016] As an embodiment, the linkage mechanism includes a pressing tongue and a stopper plate abutting against the pressing tongue, and the smart manhole cover lock also includes a support member for supporting the pressing tongue, and one end of the pressing tongue is rotatably connected to the support member; in a locked state, the pressing tongue abuts against one end of the stopper plate, and the tongue-retracting hole on the stopper plate is misaligned with the second lock tongue; in an unlocked state, one end of the first lock tongue abuts against the pressing tongue, driving the pressing tongue to rotate, and the pressing tongue pushes the stopper plate, and the stopper plate moves relative to the second lock tongue, and the tongue-retracting hole on the stopper plate corresponds to the second lock tongue.

[0017] As an embodiment, one end of the first locking tongue used for locking is configured as a locking end, and the opposite end is a butting end; one end of the pressing tongue is rotatably connected to the support member, and the other end abuts against the abutting end of the first locking tongue; the abutting position of the stop plate and the pressing tongue is close to the rotating end of the pressing tongue.

[0018] As an embodiment, the smart manhole cover lock also includes an above-the-hole unlocking mechanism, which operates independently of the driving member and is used to separately drive the first lock tongue to unlock or lock; the above-the-hole unlocking mechanism includes a rotating assembly for cooperating with an above-the-hole key and a connecting rod assembly connected to the rotating assembly, the connecting rod assembly abuts against the first lock tongue, the rotating assembly is used to be driven to rotate by the above-the-hole key, the rotating assembly can drive the connecting rod assembly to rotate synchronously, and the connecting rod assembly is used to drive the first lock tongue to unlock or lock.

[0019] As an embodiment, the first locking tongue includes a protruding first abutment column, and the connecting rod assembly includes a first connecting rod and a second connecting rod, the first connecting rod abuts against the first abutment column and the second connecting rod respectively, the second connecting rod is connected to the rotating assembly, and the rotating assembly rotates to drive the second connecting rod and the first connecting rod to rotate synchronously.

[0020] As an embodiment, the unlocking driven by the driving member is used for normal unlocking, and the unlocking of the well unlocking mechanism is used for emergency unlocking, and the first connecting rod and the second connecting rod both have corresponding unlocking position and locking position; in the normal unlocking state, the first connecting rod can be driven by the driving member to rotate from the locked position of the first connecting rod to the unlocking position, and the second connecting rod is in the locked position of the second connecting rod, and the first connecting rod rotates independently relative to the second connecting rod; in the emergency unlocking state, the second connecting rod rotates from the locked position to the unlocking position, and abuts against the first connecting rod, driving the first connecting rod to rotate from the locked position of the first connecting rod to the unlocking position.

[0021] As an embodiment, the rotating assembly includes a knob, and a locking member and a clutch inner shaft located inside the knob, the clutch inner shaft is connected to the second connecting rod, the locking member can move relative to the clutch inner shaft and is used to connect to the knob, and the knob can be driven to rotate to drive the clutch inner shaft and the second connecting rod to rotate synchronously.

[0022] As an embodiment, the rotating assembly also includes a first magnetic part, which is connected to the locking part; the well key includes a key body adapted to the knob, and the key body is provided with a first magnetic matching part, the key body is buckled to the upper end of the knob, the first magnetic matching part and the first magnetic part generate magnetic force, and the locking part can move relative to the clutch inner shaft and be connected to the knob.

[0023] As an embodiment, the rotating assembly also includes a second magnetic member, the clutch inner shaft is provided with a groove for accommodating the second magnetic member, the locking member is provided with an annular groove, the axis of the second magnetic member is set at an angle to the axis of the locking member, and the inner wall of the knob is provided with a positioning groove; in the locked state, one end of the second magnetic member is inserted into the annular groove to limit the movement of the locking member; in the emergency unlocking state, the second magnetic member is separated from the annular groove, the locking member moves relative to the clutch inner shaft, and is inserted into the positioning groove.

[0024] As an implementation manner, a second magnetic matching piece is provided on the key body, and the second magnetic matching piece is arranged toward the second magnetic piece to generate a magnetic force with the second magnetic piece.

[0025] The technical solution of this application has the following beneficial effects:

[0026] The intelligent manhole cover lock comprises a shell, in which a rotating shaft mechanism is arranged, the first end of the rotating shaft mechanism is connected to the handle, and the second end is connected to the locking claw, and the rotating shaft mechanism can rotate relative to the shell to drive the locking claw to move to unlock the manhole cover; along the direction from the first end to the second end of the rotating shaft mechanism, a primary locking mechanism and a secondary locking mechanism are arranged in sequence, when the manhole cover is locked, the primary locking mechanism is in an idling state, which can prevent external violent unlocking, and the secondary locking mechanism is in a locked state, and the secondary locking mechanism abuts against the rotating shaft mechanism and locks it to a limit position, further limiting the rotation of the rotating shaft mechanism to ensure that the manhole cover can be locked. Reliability: When the manhole cover is unlocked, the primary locking mechanism is in the unlocked state and the secondary locking mechanism is in the unlocked state. The locking claw is driven to release the lock of the manhole cover by rotating the rotating shaft mechanism through the handle. At this time, the rotating shaft mechanism squeezes and pushes the secondary locking mechanism to retract. The secondary locking mechanism bears and absorbs the offset force caused by the rotation or shaking of the rotating shaft mechanism and the locking claw, which can prevent the displacement of the rotating shaft mechanism. Possible external influences will be isolated by the secondary locking mechanism, so that the primary locking mechanism can be reliably in the idling state or the unlocked state, thereby achieving the purpose of avoiding unlocking failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 A schematic diagram of the structure of the smart manhole cover lock provided in an embodiment of the present application;

[0029] Figure 2 A schematic diagram of the exploded structure of the smart manhole cover lock provided in an embodiment of the present application;

[0030] Figure 3 Schematic diagram of different explosion structures of the smart manhole cover lock provided in the embodiments of the present application;

[0031] Figure 4 Another exploded structural diagram of the smart manhole cover lock provided in an embodiment of the present application;

[0032] Figure 5 A schematic diagram of the structure of a primary locking mechanism and a secondary locking mechanism provided in an embodiment of the present application;

[0033] Figure 6 A schematic diagram of the partial structure of the smart manhole cover lock provided in an embodiment of the present application;

[0034] Figure 7 A schematic cross-sectional view of a local structure of a smart manhole cover lock provided in an embodiment of the present application;

[0035] Figure 8 A schematic diagram of the structure of a primary locking mechanism from different perspectives provided in an embodiment of the present application;

[0036] Fig. 9 A schematic diagram of the explosion structure of the primary locking mechanism provided in an embodiment of the present application;

[0037] Fig.10 A schematic diagram of the structure of a secondary locking mechanism provided in an embodiment of the present application;

[0038] Fig.11 A schematic diagram of the explosion structure of the secondary locking mechanism provided in an embodiment of the present application;

[0039] Fig.12 A schematic cross-sectional view of the intelligent manhole cover lock provided in an embodiment of the present application;

[0040] Fig.13 A schematic diagram of the explosion structure of the well unlocking mechanism provided in an embodiment of the present application;

[0041] Fig.14 A schematic cross-sectional view of the well unlocking mechanism provided in an embodiment of the present application;

[0042] Fig.15 Schematic diagram of the cross-sectional structure of the well unlocking mechanism from different perspectives provided in the embodiment of the present application;

[0043] Fig.16 A schematic diagram of the structure of the rotating shaft mechanism provided in an embodiment of the present application;

[0044] Fig.17 A schematic diagram of the exploded structure of the rotating shaft mechanism provided in an embodiment of the present application;

[0045] Fig.18 Schematic diagram of the assembly structure of the smart manhole cover lock and the manhole cover provided in an embodiment of the present application.

[0046] Icons: 1-housing; 2-shaft mechanism; 21-elastic component; 22-clutch shaft; 23-rotating shaft; 231-first notch; 232-groove; 233-second through hole; 24-shaft housing; 241-first through hole; 25-cover plate; 3-driving member; 4-rack; 5-first locking tongue; 51-first abutting column; 6-limiting member; 61-abutting portion; 7-first elastic member; 8-lock tongue housing; 81-sliding groove; 9-second locking tongue; 10-support member; 11-pressing tongue; 12-stop plate; 13-rotating group Part; 131-knob; 1311-positioning groove; 132-clutch inner shaft; 133-first magnetic part; 134-locking part; 1341-annular groove; 135-second magnetic part; 14-first connecting rod; 15-second connecting rod; 16-key body; 161-first magnetic matching part; 162-second magnetic matching part; 163-second notch; 17-first light guide column; 18-second light guide column; 19-limiting block; 20-coil box; 26-connecting piece; 27-locking claw; 28-fixing block; 29-output shaft. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0048] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0049] like Figure 1 , 5As shown in , 6, 10 to 12, the embodiment of the present application provides an intelligent manhole cover lock, including a shell 1, a rotating shaft mechanism 2 is arranged in the shell 1, the first end of the rotating shaft mechanism 2 is connected to the handle, and the second end is connected to the locking claw 27, the rotating shaft mechanism 2 can be driven by the handle to rotate relative to the shell 1 to drive the locking claw 27 to move to unlock the manhole cover; it also includes a primary locking mechanism and a secondary locking mechanism, the primary locking mechanism and the secondary locking mechanism are arranged in sequence along the first end and the second end of the rotating shaft mechanism 2, the primary locking mechanism and the secondary locking mechanism are both arranged in the shell 1, when the manhole cover is locked, the primary locking mechanism is in an idling state, which can prevent external violent unlocking, the secondary locking mechanism is in a locked state, and the secondary locking mechanism is in a locked state. The locking mechanism abuts against the rotating shaft mechanism 2 and locks it to a limit position, further limiting the rotation of the rotating shaft mechanism 2 to ensure reliability; when the manhole cover is unlocked, the primary locking mechanism is in an unlocked state, and the secondary locking mechanism is in an unlocked state. The rotating shaft mechanism 2 is rotated by the handle to drive the locking claw 27 to release the lock of the manhole cover. At this time, the rotating shaft mechanism 2 squeezes and pushes the secondary locking mechanism to retract. The secondary locking mechanism bears and absorbs the offset force generated by the rotation or shaking of the rotating shaft mechanism 2 and the locking claw 27, which can prevent the rotating shaft mechanism 2 from being displaced. Possible external influences will be isolated by the secondary locking mechanism, so that the primary locking mechanism can be reliably in an idling state or an unlocked state, thereby achieving the purpose of avoiding unlocking failure.

[0050] Optionally, the idling of the first-level locking mechanism means that the handle can idling in the locked state.

[0051] like Figure 3 , 4 , 12, 16 and 17, as an embodiment, the primary locking mechanism includes a first locking tongue 5, the shaft mechanism 2 includes a clutch shaft 22 and a rotating shaft 23 arranged in a shaft housing 24, the clutch shaft 22 as the first end of the shaft mechanism 2, used to connect with the handle, the clutch shaft 22 is arranged in the rotating shaft 23, and the rotating shaft 23 as the second end of the shaft mechanism 2 is used to connect with the locking claw 27, when the primary locking mechanism is in an idling state, the first locking tongue 5 locks the rotating shaft 23, so that the clutch shaft 22 can rotate independently relative to the rotating shaft 23, at this time, the handle can also be idling, and will not drive the movement of the locking claw 27 under the manhole cover, thereby also improving the service life of the smart manhole cover lock; when the primary locking mechanism is in an unlocking state, the first locking tongue 5 releases the lock on the rotating shaft 23, so that the clutch shaft 22 and the rotating shaft 23 rotate synchronously, and rotating the handle can drive the locking claw 27 to move relative to the manhole cover, thereby opening the manhole cover.

[0052] Optionally, the clutch shaft 22 is connected to the handle shaft.

[0053] like Fig.17As shown, optionally, the smart manhole cover lock also includes a drive shaft and an output shaft 29, the two ends of the output shaft 29 are respectively connected to the rotating shaft 23 and the drive shaft, the drive shaft can rotate independently relative to the output shaft 29, and the drive shaft is used to connect with the locking claw 27, thereby realizing emergency unlocking underground.

[0054] Optionally, under normal circumstances, the drive shaft and the output shaft 29 are connected by a pin, so that the power above the well can be transmitted to the underground. The smart manhole cover lock also includes an underground knob 131, which is clamped with the drive shaft to fix the connecting piece 26.

[0055] When there are workers underground and the manhole cover is accidentally closed by people on the surface, emergency unlocking can be performed underground.

[0056] Pull out the latch to separate the drive shaft from the output shaft 29, turn the downhole knob 131 counterclockwise to the mechanical limit, and then retract the locking claw 27 of the manhole cover through the drive shaft to complete the opening of the manhole cover. After the downhole emergency unlocking is completed, the staff needs to complete an electrical unlocking or an emergency operation on the well, and then insert the latch into the output shaft 29 to connect the drive shaft with the output shaft 29.

[0057] like Fig.18 As shown, optionally, the smart manhole cover lock also includes a connecting piece 26, a connecting piece and a locking claw 27. The connecting piece 26 is connected to the driving shaft, and the two ends of the connecting piece are rotatably connected to the connecting piece 26 and the locking claw 27 respectively. The locking claw 27 is used to connect to the manhole cover. In this way, when the driving shaft is driven to rotate, it can drive the connecting piece 26 to rotate, and the connecting piece 26 drives the connecting piece, and the connecting piece pulls the locking claw 27.

[0058] Optionally, the downhole knob 131 cooperates with the drive shaft to clamp the connecting piece 26 .

[0059] like Fig.18 As shown, optionally, a plurality of fixing blocks 28 are provided on the lower end surface of the manhole cover, and the locking claws 27 can be inserted into the fixing blocks 28. Meanwhile, in the unlocked state, the locking claws 27 do not leave the fixing blocks 28.

[0060] Optionally, in the locked state, the locking claw 27 protrudes from the edge of the manhole cover, so that the locking claw 27 will be stuck in other positions and the operators on the well cannot open the manhole cover; in the unlocked state, the locking claw 27 moves to the inside of the edge of the manhole cover, but does not leave the fixed block 28, and the personnel on the well can open the manhole cover.

[0061] like Fig.12 and 17As shown, as an embodiment, the smart manhole cover lock also includes a shaft housing 24, the shaft housing 24 is connected to the housing 1, the shaft housing 24 is provided with a first through hole 241, the rotating shaft 23 is provided with a second through hole 233; the clutch shaft 22 is provided with a receiving chamber; the shaft mechanism 2 also includes an elastic component 21, and the elastic component 21 is located in the receiving chamber; when the primary locking mechanism is in an idling state, that is, the smart manhole cover lock is in a locked state, the first end of the first lock tongue 5 is sequentially inserted into the first through hole 241 and the second through hole 233, and is in contact with the elastic component 21. The elastic component 21 is abutted, and the elastic component 21 is compressed in the accommodating chamber. At this time, the first lock tongue 5 can limit the rotation of the rotating shaft 23, and the clutch shaft 22 can rotate freely relative to the rotating shaft 23; when the primary locking mechanism is in the unlocked state, that is, the smart manhole cover lock is in the unlocked state, the first lock tongue 5 moves away from the first through hole 241 and the second through hole 233, and the elastic component 21 penetrates into the second through hole 233 and is connected to the rotating shaft 23. At this time, the clutch shaft 22 is connected to the rotating shaft 23, and unlocking can be achieved by driving the handle to rotate.

[0062] Optionally, the elastic component 21 includes a second elastic member and a pop-up pin. When in the locked state, the pop-up pin is pushed into the accommodating chamber by the first lock tongue 5. When in the unlocked state, the first lock tongue 5 withdraws from the second through hole 233, and the end of the pop-up pin is pushed into the second through hole 233 by the second elastic member, and the rest of the pop-up pin is in the accommodating chamber.

[0063] like Figures 3 to 12 As shown, as an embodiment, the primary locking mechanism includes a rack 4 and a driving member 3 connected to the first locking tongue 5, the rack 4 is connected to the driving member 3, the driving member 3 drives the rack 4 to move relative to the rotating shaft mechanism 2, and the rack 4 drives the first locking tongue 5 to move synchronously. The rack 4 realizes the transition connection between the first locking tongue 5 and the driving member 3, so that the driving member 3 can transmit power to the first locking tongue 5, so that the first locking tongue 5 can move relative to the rotating shaft mechanism 2 to achieve the purpose of unlocking or locking; in addition, by providing the rack 4, compared with the gear transmission, the occupied volume can be reduced, and it is also convenient for assembly.

[0064] Optionally, the rack 4 includes a plurality of teeth located on one side, and the driving member 3 is provided with a driving gear that meshes with the teeth.

[0065] Optionally, the axis of the rack 4 and the axis of the first lock tongue 5 are perpendicular to each other on the same plane. In this way, the driving member 3 can be placed in the vertical direction, and the driving member 3 is connected to the rack 4 by transmission, so that the vertical driving force is changed into the horizontal driving force, which is more conducive to the placement of the driving member 3 and improves the space utilization in the shell 1.

[0066] like Figure 1As shown, the upper shell is optionally provided with a coil box 20, which is used as the computer key position of the smart manhole cover lock. The mobile phone Bluetooth is connected to the circuit board, and the indicator light flashes green slowly. The mobile phone Bluetooth sends an unlocking command, the smart manhole cover lock authenticates the authorization command, and the circuit board drives the driving member 3 to rotate. The action transmission of the driving member 3 will pass through the rack 4 and the first lock tongue 5 in sequence.

[0067] Optionally, since the drive member 3 can be controlled remotely or through a mobile phone Bluetooth connection, the unlocking process takes a certain amount of time. Therefore, in certain emergency situations, such as forgetting to wear a mobile phone, or the mobile phone cannot be connected to the drive member 3 through Bluetooth, the wellhead unlocking mechanism can be used to quickly unlock the device.

[0068] Optionally, the smart manhole cover lock also includes a handle shaft, which is connected to the shaft mechanism 2. The handle shaft is also connected to the handle through a pin. When the shaft mechanism 2 can rotate, the handle is rotated to achieve unlocking. Generally, the handle is rotated ninety degrees clockwise to achieve unlocking, and when rotated counterclockwise, the shaft mechanism 2 is reset.

[0069] Optionally, the shell 1 includes an upper shell and a lower shell, the upper shell and the lower shell are buckled with each other, and a sealing strip is also provided between the upper shell and the lower shell.

[0070] like Figures 7 to 9 As shown, as an embodiment, the first-level locking mechanism also includes a first elastic member 7, and the two ends of the first elastic member 7 are respectively abutted against the first lock tongue 5 and the rack 4. By setting the first elastic member 7, during the locking process, the first lock tongue 5 can be locked to the rotating shaft mechanism 2 by the accumulated force of the first elastic member 7, thereby avoiding the smart manhole cover lock from getting stuck.

[0071] like Fig. 9 As shown, optionally, the first locking tongue 5 is provided with a through area in the horizontal direction, the rack 4 includes a main body and an engaging portion connected to the main body, the engaging portion is provided with a plurality of teeth, the main body can pass through the through area, and the first elastic member 7 is also arranged in the through area, one end abuts against the first locking tongue 5, and the other end abuts against the main body. In the locked state, the driving member 3 rotates counterclockwise, the rack 4 moves toward the direction of the rotating shaft mechanism 2, and at the same time compresses the first elastic member 7, the first elastic member 7 then pushes the first locking tongue 5 to move toward the direction of the rotating shaft mechanism 2, and the first elastic member 7 will make the main body abut against one end of the through area; in the unlocked state, the driving member 3 rotates clockwise, and the rack 4 directly drives the first locking tongue 5 to move away from the rotating shaft mechanism 2 to achieve unlocking.

[0072] like Figures 5 to 9As shown, as an embodiment, the first-level locking mechanism also includes a lock tongue shell 8, and the lock tongue shell 8 is provided with a accommodating cavity for accommodating the first lock tongue 5, so that the first lock tongue 5 can slide smoothly, and the lock tongue shell 8 is also provided with a sliding groove 81 for the rack 4 to slide. By setting the sliding groove 81, it can play a guiding and limiting role for the rack 4; the first-level locking mechanism also includes a limiting member 6, which is connected to the lock tongue shell 8 and is used to limit the axial direction of the rack 4, so that the rack 4 can slide smoothly in the sliding groove 81.

[0073] Optionally, the accommodating cavity of the locking tongue housing 8 can limit the first elastic member 7 in the horizontal direction.

[0074] Optionally, the bolt housing 8 is connected to the upper housing via fasteners.

[0075] like Figure 3 and 7 As shown, optionally, the limit member 6 is provided with a space for the gear to rotate, and the limit member 6 includes an abutment portion 61 that can abut against the main body, the abutment portion 61 abuts against the sliding direction of the rack 4, and the tooth is smaller than the main body in vertical height to avoid the influence of the abutment portion 61 on the tooth, thereby limiting the rack 4 in a horizontal plane and perpendicular to the sliding direction.

[0076] As an embodiment, the secondary locking mechanism includes a second locking tongue 9. When the secondary locking mechanism is in a locked state, that is, the smart manhole cover lock is in a locked state, the second locking tongue 9 abuts against the rotating shaft 23 and locks it to a limit position. When the secondary locking mechanism is in an unlocked state, due to the setting of the second locking tongue 9, the rotating shaft mechanism 2 cannot move, and the friction between the first locking tongue 5 and the rotating shaft mechanism 2 will not increase. The first locking tongue 5 can smoothly exit the unlocking. At this time, the locking claw 27 rotates or shakes driven by the rotating shaft 23, generating an offset force on the rotating shaft 23. When the rotating shaft 23 is unlocked and rotated, it will squeeze and push the second locking tongue 9 to retract, so that the second locking tongue 9 can withstand and absorb the offset force, ensuring that the clutch shaft 22 and the rotating shaft 23 are in a preset position before they rotate synchronously, so that the primary locking mechanism can achieve an idling state or an unlocked state.

[0077] like Fig.12 and 17As shown, as an embodiment, a third through hole is further provided on the shaft housing 24, and a groove 232 is provided on the outer peripheral wall of the rotating shaft 23. In the locked state, the third through hole is coaxial with the groove 232, and the second locking tongue 9 passes through the third through hole and abuts against the groove 232 to limit the rotation of the rotating shaft 23. The depth of the groove 232 is shallower than the depth of the second through hole 233. The second locking tongue 9 will initially limit the rotating shaft 23 to prevent the rotating shaft 23 from rotating. The first locking tongue 5 is inserted into the second through hole 233, which will cause a large friction between the first locking tongue 5 and the rotating shaft 23, and it is easy for the driving member 3 to fail to drive the first locking tongue 5 to move.

[0078] Optionally, when the rotating shaft 23 rotates, the second locking tongue 9 will be separated from the groove 232 and will always abut against the outer peripheral wall of the rotating shaft 23 .

[0079] As an embodiment, an introduction slope is provided at the end of the second locking tongue 9 facing away from the rotating shaft mechanism 2, that is, the end of the second locking tongue that abuts the stop plate 12 is the introduction slope. Generally, in the locked state, one half of one end of the second locking tongue 9 is in the position of the tongue-retracting hole, and the other half abuts against the stop plate 12. During the unlocking process, one end of the second locking tongue 9 always abuts against one side of the stop plate 12, and the stop plate 12 gradually moves downward. By setting the introduction slope, when the second locking tongue 9 is not completely coaxial with the tongue-retracting hole, that is, the introduction slope abuts against the edge position of the tongue-retracting hole, the introduction slope will generate horizontal force and vertical force to decompose the abutment force between the second locking tongue 9 and the stop plate 12. In this way, when the driving member 3 continues to push the stop plate 12 downward through the pressing tongue 11, the driving force generated by the driving member 3 can be reduced, so that the second locking tongue 9 can correspond to the tongue-retracting hole in a shorter time and in a more driving force-saving manner.

[0080] At the same time, the unlocking difficulty is also reduced. When the guiding inclined surface abuts against the edge of the tongue-removing hole, the shaft mechanism 2 is slightly rotated to escape from the restriction of the second lock tongue 9.

[0081] Optionally, the edge of the tongue-removing hole may also be provided with a bevel.

[0082] like Figure 1 , 5 As shown in Figures 6, 10 to 12, as an implementation mode, the secondary locking mechanism includes a linkage mechanism, which is used to limit the movement of the second lock tongue 9. When the smart manhole cover lock is unlocked, the driving member 3 can drive the first lock tongue 5 to move away from the rotating shaft mechanism 2, and the first lock tongue 5 will push the linkage mechanism. At this time, the second lock tongue 9 is released from the limit, and the second lock tongue 9 can move relative to the rotating shaft mechanism 2. The rotating shaft mechanism 2 can be rotated and unlocked by applying external force, thereby achieving the purpose of unlocking the first lock tongue 5 and the second lock tongue 9 in sequence.

[0083] In addition, the second locking tongue 9 can also ensure that the shaft mechanism 2 is still in a preliminary locked state when the first locking tongue 5 exits the unlocking state, thereby improving the stability between the shaft mechanism 2 and the housing 1; unlocking can be achieved by applying a slight external force.

[0084] Optionally, the driving member 3 can also drive the first locking tongue 5 to move toward the rotating shaft mechanism 2. At this time, the second locking tongue 9 is restricted by the linkage mechanism and cannot move, and cooperates with the first locking tongue 5 at the same time, thereby restricting the rotation of the rotating shaft mechanism 2 to achieve the purpose of locking.

[0085] like Figure 7 , 10 As shown in Figure 12, as an embodiment, the linkage mechanism includes a pressing tongue 11 and a stopper 12 abutting against the pressing tongue 11. The pressing tongue 11 can abut against one end of the first locking tongue 5 in some cases; the smart manhole cover lock also includes a support member 10 for supporting the pressing tongue 11, and one end of the pressing tongue 11 is rotatably connected to the support member 10; in the locked state, the pressing tongue 11 abuts against one end of the stopper 12, at which time the pressing tongue 11 can abut against the first locking tongue 5, of course, it can also not abut, and the stopper 12 is provided with a tongue-retracting hole for the second locking tongue 9 to pass through, and the tongue-retracting hole is misaligned with the second locking tongue 9, thereby achieving that in the locked state, the pressing tongue 11 cooperates with the stopper 12 to limit the second locking tongue 9 from moving along the water The first locking tongue 5 is in unlocked state, and one end of the first locking tongue 5 abuts against the pressing tongue 11, driving the pressing tongue 11 to rotate. The pressing tongue 11 pushes the stopper 12, and the stopper 12 moves relative to the second locking tongue 9. The tongue-retracting hole on the stopper 12 corresponds to the second locking tongue 9. In this way, when the rotating shaft mechanism 2 rotates, the locking function of the second locking tongue 9 fails, and the second locking tongue spring is compressed, and one end of the second locking tongue 9 can pass through the tongue-retracting hole, and the stopper 12 cannot limit the second locking tongue 9, thereby achieving the purpose of sequentially unlocking the first locking tongue 5 and the second locking tongue 9.

[0086] Optionally, the second locking tongue 9 moves in the horizontal direction, and the stopper 12 moves in the vertical direction.

[0087] like Figure 6 and 17As shown, optionally, the support member 10 is connected to the lock tongue housing 8, and is arranged in an upper and lower manner with the lock tongue housing 8, which facilitates the assembly of parts in the support member 10; wherein, a groove for accommodating the second lock tongue 9 is provided in the support member 10, and the secondary locking mechanism also includes a second lock tongue spring, the second lock tongue spring is located in the groove, one end of the second lock tongue 9 is abutted against the second lock tongue 9, and the other end is abutted against the support member 10, the smart manhole cover is locked in a locked state, the first lock tongue 5 cooperates with the second lock tongue 9, and a secondary locking structure is realized for the rotating shaft mechanism 2, thereby improving the reliability of the locking; in an unlocked state, the first lock tongue 5 moves in a direction away from the rotating shaft mechanism 2, and the second lock tongue 9 is abutted against the groove 232 of the rotating shaft 23 through the second lock tongue spring. When the rotating shaft 23 rotates, the second lock tongue 9 will disengage from the groove 232 and is always abutted against the outer peripheral wall of the rotating shaft 23.

[0088] Optionally, the second locking tongue 9 is provided with a flange, and the second locking tongue spring can abut against the flange.

[0089] like Fig.12 As shown, optionally, a stop plate spring is further provided in the support member 10. In the unlocked state, due to the rotation of the pressing tongue 11, the stop plate 12 will be pushed to move in the vertical direction, and the stop plate 12 compresses the stop plate spring so that the tongue withdrawal hole corresponds to the second lock tongue 9; in the locked state, the stop plate spring restores its elastic deformation, pushing the stop plate 12 to move upward, and the stop plate 12 will also push the pressing tongue 11 to abut against the first lock tongue 5. At this time, the tongue withdrawal hole and the second lock tongue 9 are misaligned, one end of the second lock tongue 9 abuts against the stop plate 12, and the other end abuts against the groove 232 of the rotating shaft 23. Even if an external force drives the clutch shaft 22 at this time, the second lock tongue 9 cannot move relative to the clutch shaft 22, thereby locking the clutch shaft 22.

[0090] Optionally, the support member 10 is provided with a groove for accommodating the pressing tongue 11 , and the pressing tongue 11 can rotate relative to the support member 10 in the groove of the support member 10 .

[0091] like Fig.12As shown, as an embodiment, one end of the first locking tongue 5 used for locking is configured as a locking end, and the opposite end is an abutting end; one end of the pressing tongue 11 is rotatably connected to the supporting member 10, and the other end abuts against the abutting end of the first locking tongue 5; the abutting position of the stopper plate 12 and the pressing tongue 11 is close to the rotating end of the pressing tongue 11. In this way, by using the principle of lever, in the unlocked state, when the driving member 3 moves the first locking tongue 5 away from the rotating shaft mechanism 2, the force of the pressing tongue 11 that can push the stopper plate 12 is amplified, and the driving member 3 can use a smaller driving force to enable the pressing tongue 11 to push the stopper plate 12 at the same time, thereby reducing the energy loss of the driving member 3 and improving the life of the lock; at the same time, when locking, one end of the second locking tongue 9 is always abutted against one side of the stopper plate 12 through the second locking tongue spring, and when the pressing tongue 11 slightly presses the stopper plate 12 downward, the tongue-retracting hole can correspond to the second locking tongue 9, thereby reducing the difficulty of unlocking the second locking tongue 9;

[0092] In addition, when using the well unlocking mechanism, since it is manually operated, the operator can complete the unlocking action with less effort during the unlocking process.

[0093] Optionally, the pressing tongue 11 has an arc-shaped structure, so as to be easily abutted against the stopper 12 and the first locking tongue 5 respectively.

[0094] Optionally, the depressing tongue 11 may be connected to the supporting member 10 via a knurled pin.

[0095] like Figure 3 , 4 , 12 and 13, as an implementation mode, the smart manhole cover lock further includes an upper unlocking mechanism, which operates independently from the driving member 3 and is used to drive the first lock tongue 5 to unlock or lock, so that the smart manhole cover lock in the embodiment of the present application has a normal unlocking function driven by the driving member 3 and an upper unlocking function. When an emergency occurs, such as when the driving member 3 fails or the driving member 3 cannot be worn with a mobile phone, there is no need to destroy the lock, but the upper unlocking mechanism can be used to unlock, thereby protecting the integrity of the smart manhole cover lock and eliminating the subsequent lock maintenance cost;

[0096] The uphole unlocking mechanism includes a rotating assembly 13 for cooperating with the uphole key and a connecting rod assembly connected to the rotating assembly 13. The connecting rod assembly abuts against the first locking tongue 5. When the rotating assembly 13 is driven to rotate by the uphole key, it can drive the connecting rod assembly to rotate synchronously. Moreover, since the connecting rod assembly abuts against the first locking tongue 5, when the connecting rod assembly rotates, it can drive the first locking tongue 5 to move relative to the rotating shaft mechanism 2 to achieve unlocking or locking. Therefore, in an emergency, the operator can achieve the purpose of unlocking by using the uphole key.

[0097] like Figure 3As shown, as an embodiment, the first locking tongue 5 includes a protruding first abutment column 51, and the connecting rod assembly includes a first connecting rod 14 and a second connecting rod 15. The first connecting rod 14 abuts against the first abutment column 51 and the second connecting rod 15 respectively, and the second connecting rod 15 is connected to the rotating assembly 13. In this way, when the rotating assembly 13 is driven to rotate, the driving force can drive the second connecting rod 15 and the first connecting rod 14 to rotate synchronously, and the first connecting rod 14 abuts against the first abutment column 51. During the unlocking process, the first connecting rod 14 can move the first locking tongue 5 away from the rotating shaft mechanism 2; when locked, the first locking tongue 5 can move toward the rotating shaft mechanism 2 through the elastic force of the first elastic member 7.

[0098] Optionally, the first connecting rod 14 is arranged above the lock tongue housing 8 and is rotatably connected to the lock tongue housing 8. The first connecting rod 14 includes two angled first connecting rods, one of which abuts against the first abutment column 51, and the other first connecting rod abuts against the second abutment column of the second connecting rod 15. The second connecting rod 15 includes a second connecting rod, and a second abutment column is provided at the end of the second connecting rod; the rotating assembly 13 also includes a torsion spring, and the second connecting rod 15 also includes a third abutment column, which abuts against the third abutment column and the lock tongue housing 8 respectively. By setting the torsion spring, the torsion spring can push the second connecting rod 15 to return to its initial position after the emergency unlocking is completed.

[0099] like Figure 3 As shown, as an embodiment, the unlocking driven by the driving member 3 is used for normal unlocking, and the unlocking of the well unlocking mechanism is used for emergency unlocking, and the first connecting rod 14 and the second connecting rod 15 both have corresponding unlocking positions and locking positions; in the normal unlocking state, the first connecting rod 14 can be driven by the driving member 3 to rotate from the locking position of the first connecting rod 14 to the unlocking position, and the second connecting rod 15 is in the locking position of the second connecting rod 15. At this time, the first connecting rod 14 can rotate independently relative to the second connecting rod 15, so as to avoid the well unlocking mechanism interfering with the first connecting rod 14 during normal unlocking; in the emergency unlocking state, the second connecting rod 15 rotates from the locking position to the unlocking position, and the second connecting rod 15 abuts against the first connecting rod 14. The second connecting rod 15 is driven to rotate by the rotating assembly 13, and at the same time, it also drives the first connecting rod 14 to rotate from the locking position of the first connecting rod 14 to the unlocking position, thereby driving the first locking tongue 5 to move away from the rotating shaft mechanism 2.

[0100] Optionally, in a normal unlocked state, the second connecting rod 15 is in a locked position, and when the first connecting rod 14 is in the locked position, it may or may not abut against the second abutting column.

[0101] Optionally, when the first connecting rod 14 rotates from the locked position to the unlocked position, the first abutting column 51 always abuts against the first connecting rod 14 , so that the first connecting rod 14 can drive the first locking tongue 5 to move away from the rotating shaft mechanism 2 .

[0102] like Figures 12 to 14 As shown, as an embodiment, the rotating assembly 13 includes a knob 131, and a locking member 134 and a clutch inner shaft 132 located in the knob 131, the clutch inner shaft 132 is connected to the second connecting rod 15, and when the clutch inner shaft 132 rotates, the second connecting rod 15 rotates synchronously; the locking member 134 can move relative to the clutch inner shaft 132, so that the clutch inner shaft 132 and the knob 131 are connected through the locking member 134, so that when the knob 131 is driven to rotate, it can drive the clutch inner shaft 132 and the second connecting rod 15 to rotate synchronously, thereby achieving the purpose of unlocking the wellbore; and, by setting the locking member 134, the purpose of free idling of the knob 131 in the locked state can also be achieved.

[0103] Optionally, the second connecting rod 15 is axially connected to the clutch inner shaft 132 through a fastener, the clutch inner shaft 132 is limited by a retaining spring and the knob 131 is sealed to the upper cover to improve the stability between the rotating assembly 13 and the upper cover.

[0104] Optionally, when the well is locked, the knob 131 can be rotated ninety degrees; of course, after unlocking, the elastic force of the first elastic member 7 will also cause the rotating assembly 13 to rotate automatically; in addition, the elastic force of the torsion spring will also reset the second connecting rod 15.

[0105] like Figures 13 to 15 As shown, as an embodiment, the rotating assembly 13 also includes a first magnetic member 133, and the first magnetic member 133 is connected to the locking member 134; the well key includes a key body 16 adapted to the knob 131, and the key body 16 is provided with a first magnetic matching member 161, and the key body 16 is snapped to the upper end of the knob 131. The first magnetic matching member 161 and the first magnetic member 133 generate a magnetic force, which can drive the locking member 134 to move relative to the clutch inner shaft 132, so that the locking member 134 is connected to the knob 131, so that when the key body 16 drives the knob 131, the knob 131 can drive the locking member 134 and the clutch inner shaft 132 to rotate synchronously.

[0106] Optionally, the magnetic force includes magnetic attraction and magnetic repulsion.

[0107] Optionally, the first magnetic member 133 and the first magnetic matching member 161 may be magnetic steels that can generate attraction force on each other.

[0108] like Figures 13 to 15As shown, optionally, the clutch inner shaft 132 is provided with a through groove extending through the axial direction, and the locking member 134 is inserted into the through groove. The locking member 134 also includes a first boss and a second boss arranged at intervals, and the first boss and the second boss are arranged at intervals to form an annular groove 1341; the shape of the through groove is adapted to the shape of the locking member 134, that is, one section has a large radial dimension and the other section has a small radial dimension, the first boss abuts against the through groove, and one end of the locking member 134 is provided with a chamber for accommodating the first magnetic member 133, and the first magnetic member 133 can be embedded in the chamber. When the key body 16 is engaged on the rotation, the first magnetic matching member 161 and the first magnetic member 133 generate an attractive force, so that one end of the locking member 134 can protrude from the clutch inner shaft 132 and be connected to the knob 131.

[0109] Of course, the first magnetic member 133 may also be disposed at the end of the locking member 134 and connected to the locking member 134 by gluing.

[0110] Optionally, a locking member spring is provided on the outer sleeve of the locking member 134. When the locking member 134 is moved by the magnetic attraction force, the locking member spring will be compressed. When the first magnetic member 133 loses its adsorption force, the locking member spring will reset the locking member 134, and the knob 131 can rotate freely and is not connected to the clutch inner shaft 132.

[0111] Optionally, a plurality of first magnetic matching parts 161 are circumferentially arranged on the key body 16 , so that the key body 16 can generate attractive force with the first magnetic part 133 at different angles.

[0112] In a possible implementation, the first magnetic component 133 and the first magnetic matching component 161 can also generate a mutual repulsive force, that is, the repulsive force can push the locking component 134 to move in the opposite direction, and can also realize the connection between the knob 131 and the clutch inner shaft 132; at the same time, the setting position of the locking component spring also needs to be adjusted accordingly so that the locking component 134 can be automatically reset.

[0113] like Figures 13 to 15As shown in the figure, as an embodiment, the rotating assembly 13 also includes a second magnetic member 135, the clutch inner shaft 132 is provided with a groove for accommodating the second magnetic member 135, and the locking member 134 is provided with an annular groove 1341. The axis of the second magnetic member 135 is set at an angle to the axis of the locking member 134, so that the second magnetic member 135 is convenient to lock the locking member 134 when it moves relative to the clutch inner shaft 132. The inner peripheral wall of the knob 131 is provided with a positioning groove 1311; in the normal locking state, the second magnetic member 135 is arranged at an angle to the axis of the locking member 134. One end of the magnetic member 135 is inserted into the annular groove 1341 to limit the movement of the locking member 134. At this time, the knob 131 has no connection with the clutch inner shaft 132, and the knob 131 can rotate freely. In the emergency unlocking state, the second magnetic member 135 moves axially along the clutch inner shaft 132 and separates from the annular groove 1341. The locking member 134 is attracted by the magnetic attraction to move relative to the clutch inner shaft 132 and is inserted into the positioning groove 1311, thereby realizing the connection between the knob 131 and the clutch inner shaft 132.

[0114] like Fig.14 As shown, optionally, since the second magnetic member 135 moves upward, the depth of the groove of the clutch inner shaft 132 for accommodating the second magnetic member 135 is greater than the second magnetic member 135, so that the second magnetic member 135 has space to move upward.

[0115] Optionally, the second magnetic member 135 and the locking member 134 are perpendicular to each other, so that the second magnetic member 135 can be inserted into the annular groove 1341 when it moves again.

[0116] like Fig.13 and 15 As shown, optionally, a plurality of positioning grooves 1311 are provided at intervals on the inner wall of the knob 131 , so that the locking member 134 can be easily inserted into the positioning groove 1311 when the knob 131 is rotated at different angles.

[0117] As a possible implementation manner, the second magnetic member 135 and the second magnetic matching member 162 may also generate a repulsive force, that is, the second magnetic member 135 may move downward and separate from the annular groove 1341 .

[0118] like Figures 12 to 15 As shown, as an embodiment, a second magnetic matching member 162 is provided on the key body 16, and the second magnetic matching member 162 is arranged toward the second magnetic member 135, and is used to generate a magnetic force with the second magnetic member 135, so that the second magnetic member 135 can be separated from the annular groove 1341, and the locking member 134 can be connected to the knob 131; when the key body 16 is separated from the knob 131, the second magnetic member 135 will be in a position vertically in the annular groove 1341 due to its own gravity.

[0119] Optionally, in the locked state, the second magnetic member 135 is in the groove of the clutch inner shaft 132, and the second magnetic member 135 can limit the sliding of the locking member 134 to prevent the external strong magnetic structure from approaching the first magnetic member 133, which may easily cause accidental unlocking. The second magnetic member 135 is provided, which is equivalent to providing two unlocking mechanisms for the magnetic unlocking of the smart manhole cover lock, that is, the lock can only be unlocked when both the first magnetic member 133 and the second magnetic member 135 are magnetized; in the unlocked state, the second magnetic member 135 leaves the annular groove 1341, so that the locking member 134 can slide, so that the locking member 134 can be connected to the knob 131 to achieve unlocking.

[0120] like Fig.17 As shown, optionally, the rotating shaft mechanism 2 also includes a cover plate 25, which is snap-fitted with the rotating shaft housing 24, and a limiting portion is provided on the cover plate 25; a first notch 231 is provided at the upper end of the rotating shaft 23, and the limiting portion is located in the first notch 231 to limit the rotation angle of the rotating shaft 23.

[0121] Optionally, the arc length of the first notch 231 is ninety degrees, so that the limiting portion can limit the rotating shaft 23 to rotate ninety degrees clockwise.

[0122] like Figure 1 and 17 As shown, optionally, the smart manhole cover lock also includes a circuit board and a handle, an indicator light is provided on the circuit board, a first light guide column 17 is provided on the shell 1, and the first light guide column 17 corresponds to the indicator light; a second light guide column 18 corresponding to the first light guide column 17 is provided on the handle, so that when the handle is buckled on the shell 1 and not flipped over, the state of the smart manhole cover lock can be observed through the second light guide column 18.

[0123] Optionally, a locking limit photoelectric switch and an unlocking limit photoelectric switch are also provided on the circuit board. Both the locking limit photoelectric switch and the unlocking limit photoelectric switch can be shielded by the tail sheet of the rack 4 with the cooperation of the rack 4, so that the locking limit photoelectric switch and the unlocking limit photoelectric switch generate signals, thereby stopping the driving operation of the driving component 3.

[0124] Optionally, a shaft locking induction Hall and a lock tongue locking induction Hall are also provided on the circuit board, and an induction magnet is also provided on the outer surface of the rotating shaft 23. The shaft locking induction Hall cooperates with the induction magnet to determine whether the rotating shaft 23 is in a locked state position; the second end of the first lock tongue 5 is also provided with an induction magnet, and the lock tongue locking induction Hall can cooperate with the induction magnet on the first lock tongue 5 to determine whether the first lock tongue 5 is in a locked state position.

[0125] like Figure 1 , 2As shown in Figure 15, optionally, a limit block 19 is provided on the shell 1, and a second notch 163 is provided on the key body 16. The shape of the second notch 163 is adapted to the outer periphery of the limit block 19. The shortest distance between the limit block 19 and the knob 131 corresponds to the distance between the second notch 163 on the key body 16 and the opposite end of the second notch 163. The second notch 163 can limit the angle at which the key body 16 is inserted into the knob 131. At the same time, when the handle key body 16 needs to be turned, it is also necessary to rotate the corresponding angle to pull out the key. In this way, when the locking member 134 is stuck in the positioning groove 1311, it can avoid that the elastic force of the locking member spring cannot reset the locking member 134. The locking member 134 can be reset by rotating the knob 131.

[0126] Optionally, when a limit block 19 is provided on the housing 1, the torsion spring may be omitted.

[0127] In addition, one or two second notches 163 may be provided, and when the limit block 19 is provided, the number of second magnetic fittings 162 provided may correspond to the number of second notches 163 , thereby reducing the number of second magnetic fittings 162 provided.

[0128] The above description is only an embodiment of the present application and is not intended to limit the protection scope of the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0129] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0130] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

Claims

1. A smart manhole cover lock, characterized in that: include: case; A rotating shaft mechanism is disposed in the housing, a first end of which is connected to the handle, and a second end of which is connected to the locking claw. The rotating shaft mechanism can rotate relative to the housing to drive the locking claw to move and unlock the manhole cover; A primary locking mechanism and a secondary locking mechanism are sequentially arranged along the direction from the first end to the second end of the rotating shaft mechanism. When the manhole cover is locked, the primary locking mechanism is in an idling state, and the secondary locking mechanism is in a locked state. When the manhole cover is unlocked, the primary locking mechanism is in an unlocked state, and the secondary locking mechanism is in an unlocked state. The rotating shaft mechanism is rotated by the handle to drive the locking claw to release the locking of the manhole cover. When the manhole cover is locked, the secondary locking mechanism abuts against the rotating shaft mechanism and locks it to a limit position. When the manhole cover is unlocked, the rotating shaft mechanism is rotated to squeeze and push the secondary locking mechanism to retract. The secondary locking mechanism bears and absorbs the offset force generated by the rotation or shaking of the rotating shaft mechanism and the locking claw, so that the primary locking mechanism can be reliably in an idling state or an unlocked state.

2. The intelligent manhole cover lock according to claim 1, characterized in that: The primary locking mechanism includes a first locking tongue; the rotating shaft mechanism includes a clutch shaft and a rotating shaft, the clutch shaft as the first end of the rotating shaft mechanism is used to connect with the handle, the clutch shaft is arranged in the rotating shaft, and the rotating shaft as the second end of the rotating shaft mechanism is used to connect with the locking claw; when the primary locking mechanism is in an idling state, the first locking tongue locks the rotating shaft so that the clutch shaft can rotate independently relative to the rotating shaft, and when the primary locking mechanism is in an unlocked state, the first locking tongue releases the lock on the rotating shaft so that the clutch shaft and the rotating shaft rotate synchronously.

3. The intelligent manhole cover lock according to claim 2, characterized in that: The smart manhole cover lock also includes a shaft housing, and the shaft housing is connected to the housing; The clutch shaft and the rotating shaft are arranged in the rotating shaft housing; The shaft housing is provided with a first through hole, the rotating shaft is provided with a second through hole; the clutch shaft is provided with a receiving chamber; The rotating shaft mechanism further comprises an elastic component, and the elastic component is located in the accommodating chamber; When the primary locking mechanism is in an idling state, the first end of the first locking tongue sequentially penetrates the first through hole and the second through hole and abuts against the elastic component, and the elastic component is compressed in the accommodating chamber so that the clutch shaft can rotate independently relative to the rotating shaft; When the primary locking mechanism is in an unlocked state, the first locking tongue moves away from the first through hole and the second through hole, and the elastic component penetrates into the second through hole and is connected to the rotating shaft, so that the clutch shaft rotates synchronously with the rotating shaft.

4. The intelligent manhole cover lock according to claim 2 or 3, characterized in that: The primary locking mechanism also includes a rack connected to the first locking tongue and a driving member, the rack is connected to the driving member, the driving member drives the rack to move relative to the rotating shaft mechanism, and the rack drives the first locking tongue to move synchronously.

5. The intelligent manhole cover lock according to claim 4, characterized in that: The primary locking mechanism further includes a first elastic member, two ends of which are respectively in contact with the first locking tongue and the rack.

6. The intelligent manhole cover lock according to claim 4, characterized in that: The primary locking mechanism further comprises a lock tongue housing, wherein the lock tongue housing is provided with a receiving cavity for receiving the first lock tongue and a sliding groove for the rack to slide; The primary locking mechanism also includes a limiting member, which is connected to the locking tongue housing and is used to limit and stop the rack.

7. The intelligent manhole cover lock according to claim 3, characterized in that: The secondary locking mechanism includes a second locking tongue. When the secondary locking mechanism is in a locked state, the second locking tongue abuts against the rotating shaft and locks it to a limit position. When the secondary locking mechanism is in an unlocked state, the locking claw rotates or shakes driven by the rotating shaft, generating an offset force on the rotating shaft. The rotating shaft squeezes and pushes the second locking tongue to retract, so that the second locking tongue bears and absorbs the offset force, ensuring that the clutch shaft and the rotating shaft are located at preset positions, so that the primary locking mechanism is reliably in an idling state or an unlocked state.

8. The intelligent manhole cover lock according to claim 7, characterized in that: A third through hole is provided on the rotating shaft housing, and a groove is provided on the outer peripheral wall of the rotating shaft, and the third through hole is coaxial with the groove; in a locked state, the second locking tongue passes through the third through hole and abuts against the groove to limit the rotation of the rotating shaft; in an unlocked state, when the rotating shaft rotates, the second locking tongue can be disengaged from the groove.

9. The intelligent manhole cover lock according to claim 7 or 8, characterized in that: An end of the second locking tongue facing away from the rotating shaft is provided with an introduction slope.

10. The intelligent manhole cover lock according to claim 7, characterized in that: The secondary locking mechanism also includes a linkage mechanism for limiting the movement of the second lock tongue. When the smart manhole cover lock is unlocked, the first lock tongue moves away from the rotating shaft mechanism, pushing the linkage mechanism to unlock and limit the second lock tongue.

11. The intelligent manhole cover lock according to claim 10, characterized in that: The linkage mechanism includes a pressing tongue and a stopper plate abutting against the pressing tongue, and the intelligent manhole cover lock also includes a support member for supporting the pressing tongue, and one end of the pressing tongue is rotatably connected to the support member; In the locked state, the pressing tongue abuts against one end of the stopper sheet, and the tongue-retracting hole on the stopper sheet is misaligned with the second locking tongue; In the unlocked state, one end of the first lock tongue abuts against the pressing tongue, driving the pressing tongue to rotate, and the pressing tongue pushes the stop plate, and the stop plate moves relative to the second lock tongue, and the tongue-retracting hole on the stop plate corresponds to the second lock tongue.

12. The intelligent manhole cover lock according to claim 11, characterized in that: One end of the first locking tongue used for locking is configured as a locking end, and the opposite end is a butting end; one end of the pressing tongue is rotatably connected to the support member, and the other end abuts against the butting end of the first locking tongue; the abutting position of the stopper and the pressing tongue is close to the rotating end of the pressing tongue.

13. The intelligent manhole cover lock according to claim 2 or 3, characterized in that: The smart manhole cover lock also includes an upper manhole unlocking mechanism, which operates independently from the driving member and is used to drive the first locking tongue to unlock or lock. The uphole unlocking mechanism includes a rotating assembly for cooperating with an uphole key and a connecting rod assembly connected to the rotating assembly, the connecting rod assembly abuts against the first locking tongue, the rotating assembly is used to be driven to rotate by the uphole key, the rotating assembly can drive the connecting rod assembly to rotate synchronously, and the connecting rod assembly is used to drive the first locking tongue to unlock or lock.

14. The intelligent manhole cover lock according to claim 13, characterized in that: The first locking tongue includes a protruding first abutment column, and the connecting rod assembly includes a first connecting rod and a second connecting rod. The first connecting rod abuts against the first abutment column and the second connecting rod respectively, and the second connecting rod is connected to the rotating assembly. The rotating assembly rotates to drive the second connecting rod and the first connecting rod to rotate synchronously.

15. The intelligent manhole cover lock according to claim 14, characterized in that: The driver-driven unlocking is used for normal unlocking, and the well unlocking mechanism unlocking is used for emergency unlocking. The first connecting rod and the second connecting rod both have corresponding unlocking positions and locking positions; In a normal unlocking state, the first connecting rod can be driven by the driving member to rotate from the locked position of the first connecting rod to the unlocking position, and the second connecting rod is in the locked position of the second connecting rod, and the first connecting rod rotates independently relative to the second connecting rod; In the emergency unlocking state, the second connecting rod rotates from the locked position to the unlocked position and abuts against the first connecting rod, driving the first connecting rod to rotate from the locked position of the first connecting rod to the unlocked position.

16. The intelligent manhole cover lock according to claim 14 or 15, characterized in that: The rotating assembly includes a knob, and a locking member and a clutch inner shaft located inside the knob. The clutch inner shaft is connected to the second connecting rod. The locking member can move relative to the clutch inner shaft and is used to connect to the knob. The knob can be driven to rotate to drive the clutch inner shaft and the second connecting rod to rotate synchronously.

17. The intelligent manhole cover lock according to claim 16, characterized in that: The rotating assembly further includes a first magnetic member, wherein the first magnetic member is connected to the locking member; The well key includes a key body adapted to the knob, a first magnetic matching part is provided on the key body, the key body is buckled to the upper end of the knob, the first magnetic matching part and the first magnetic part generate magnetic force, and the locking part can move relative to the clutch inner shaft and be connected to the knob.

18. The intelligent manhole cover lock according to claim 17, characterized in that: The rotating assembly further comprises a second magnetic member, the clutch inner shaft is provided with a groove for accommodating the second magnetic member, the locking member is provided with an annular groove, the axis of the second magnetic member is arranged at an angle to the axis of the locking member, and the inner peripheral wall of the knob is provided with a positioning groove; In the locked state, one end of the second magnetic member is inserted into the annular groove to limit the movement of the locking member; In the emergency unlocking state, the second magnetic member is separated from the annular groove, and the locking member moves relative to the clutch inner shaft and is inserted into the positioning groove.

19. The intelligent manhole cover lock according to claim 18, characterized in that: A second magnetic matching piece is disposed on the key body, and the second magnetic matching piece is arranged toward the second magnetic piece and is used to generate magnetic force with the second magnetic piece.

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