Well lid lock

Abstract

The utility model provides a well lid lock. The well lid lock comprises a supporting piece; the clutch shaft sleeve is connected with the supporting piece, one end of the clutch shaft sleeve is used for being connected with the locking rod, and the clutch shaft sleeve can rotate relative to the supporting piece and is used for driving the locking rod connected with the well lid to move; the clutch mechanism is arranged in the cavity of the clutch shaft sleeve and used for being connected with the handle rotating shaft; the first spring bolt can slide relative to the supporting piece; in the locking state, the first spring bolt slides towards the clutch shaft sleeve and is used for making contact with the clutch shaft sleeve and stopping the clutch shaft sleeve from rotating, and the clutch mechanism can independently rotate. In the unlocking state, the first spring bolt slides away from the clutch shaft sleeve, and the clutch mechanism is connected with the clutch shaft sleeve and can drive the clutch shaft sleeve to rotate. According to the technical scheme, the handle rotating shaft does not need to be fixed when the well lid lock is in the locked state, the handle can rotate freely, and therefore the situation that the well lid lock is damaged is reduced, and the service life of the well lid lock is prolonged.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of well lid locks, in particular to a well lid lock. BACKGROUND

[0002] The well lid lock is a management device frequently used in places such as communication pipe network combined wells, electric power pipeline combined wells and city comprehensive pipe gallery special wells, and is used to prevent personnel from entering the pipe well mouth without authorization.

[0003] The existing well lid lock is generally locked by a latch that clamps a handle shaft, so that the handle cannot be rotated. If force is applied to twist the handle, the lock is easily damaged. CONTENT OF THE UTILITY MODEL

[0004] The application aims to provide a well lid lock that can freely rotate the handle in the locked state, thereby reducing the damage to the well lid lock and prolonging the service life of the well lid lock.

[0005] To solve the above technical problems, the application adopts the following technical solutions:

[0006] The application provides a well lid lock, which comprises a support, a clutch shaft sleeve connected with the support, one end of the clutch shaft sleeve being used for connecting with a locking rod, the clutch shaft sleeve being rotatable relative to the support and used for driving the locking rod connected with a well lid to move, a clutch mechanism arranged in a cavity of the clutch shaft sleeve and used for connecting with a handle shaft, and a first lock tongue slidable relative to the support.

[0007] As an implementation form, a side wall of the clutch shaft sleeve is provided with a through hole, and an abutting end of the first lock tongue can penetrate into the through hole and abut against the clutch mechanism.

[0008] As an implementation form, the clutch mechanism comprises a clutch shaft used for connecting with the handle shaft, and the clutch shaft is provided with a containing cavity; the clutch mechanism further comprises an elastic assembly, the elastic assembly being located in the containing cavity; in the locked state, the first lock tongue penetrates into the through hole, abuts against the elastic assembly, and the elastic assembly is compressed in the containing cavity; and in the unlocked state, the first lock tongue slides away from the through hole, and the elastic assembly penetrates into the through hole and connects with the clutch shaft sleeve.

[0009] As an implementation form, the manhole cover lock further comprises a driving member connected with the support member, the driving member is connected with the first lock tongue through a transmission assembly, and the driving member is used to drive the first lock tongue to slide relative to the support member.

[0010] As an implementation form, the manhole cover lock further comprises a first elastic member and a first sliding member, the first sliding member is connected with the first lock tongue through the first elastic member, and the transmission assembly is connected with the first sliding member and the driving member.

[0011] As an implementation form, the manhole cover lock further comprises a second lock tongue, the second lock tongue is capable of sliding relative to the support member; an outer peripheral wall of the clutch shaft sleeve is provided with a groove, in the locked state, the second lock tongue is used to abut in the groove to limit the rotation of the clutch shaft sleeve.

[0012] As an implementation form, the manhole cover lock further comprises a second sliding member, the second sliding member abuts against the first lock tongue and passes through the second lock tongue, the second sliding member is provided with a avoiding space, in the locked state, the second sliding member is in contact with the second lock tongue to limit the sliding of the second lock tongue; in the unlocked state, the first lock tongue moves away from the direction of the clutch shaft sleeve, the second sliding member moves along a direction perpendicular to the sliding direction of the second lock tongue, and the second lock tongue can slide to the position of the avoiding space.

[0013] As an implementation form, the manhole cover lock further comprises a magnetic key, a knob used to cooperate with the magnetic key, a lock cylinder located in the knob, at least one first magnetic member and a locking member, the lock cylinder abuts against the first lock tongue, the lock cylinder is rotatable to drive the first lock tongue to slide; the first magnetic member is connected with the locking member, and both are arranged at one end of the lock cylinder, the locking member is capable of sliding relative to the lock cylinder and is used to be connected with the knob, in the unlocked state, the magnetic key is used to be connected with the knob, a magnetic force generated by the magnetic key and the first magnetic member is used to drive the locking member to slide, and the locking member is connected with the knob.

[0014] As an implementation form, the magnetic key comprises a first magnetic cooperation member used to cooperate with the first magnetic member and a rotating cap, the first magnetic cooperation member is connected with the rotating cap, the rotating cap is matched with one end of the knob, the first magnetic member is arranged at one side of the locking member and is consistent with the sliding direction of the locking member, and the first magnetic cooperation member is arranged on the side wall of the rotating cap.

[0015] As an implementation form, the locking piece is further provided with a penetrating area, one end of the lock core comprises a positioning part, the positioning part is located in the penetrating area, and the well lid lock further comprises a second elastic piece, two ends of the second elastic piece are respectively in abutment with the locking piece and the positioning part.

[0016] As an implementation form, the locking piece is provided with a first notch on one side in the sliding direction, the lock core is provided with a second notch corresponding to the first notch, the first notch and the second notch cooperatively form an accommodating area for accommodating the second magnetic piece, in the locked state, the second magnetic piece is located in the accommodating area; in the unlocked state, the second magnetic piece is away from the accommodating area.

[0017] As an implementation form, the magnetic key further comprises a second magnetic matching piece, the second magnetic matching piece is connected with the rotating cap, and the second magnetic matching piece is used for moving the second magnetic piece away from the accommodating area.

[0018] As an implementation form, the lock core is further provided with a positioning groove for accommodating the second magnetic piece, the positioning groove is communicated with the second notch, and the second magnetic matching piece is used for moving the first magnetic piece from the accommodating area into the positioning groove.

[0019] As an implementation form, the rotating knob comprises a plurality of stoppers arranged at intervals, the locking piece can be inserted between two adjacent stoppers, and the rotating knob is used for rotating the lock core in the locked state.

[0020] As an implementation form, the well lid lock further comprises a driving shaft and an output shaft, two ends of the output shaft are respectively connected with the clutch shaft sleeve and the driving shaft, the driving shaft can rotate independently relative to the output shaft, and the driving shaft is used for being connected with the locking rod.

[0021] As an implementation form, the well lid lock further comprises a connecting piece, a connecting rod and a locking rod, the connecting piece is connected with the driving shaft, two ends of the connecting rod are respectively rotationally connected with the connecting piece and the locking rod, and the locking rod is used for being connected with the well lid.

[0022] The technical scheme of the present application has the following effects:

[0023] The well lid lock comprises a support, and further comprises a clutch shaft sleeve connected with the support, the support supporting and positioning the clutch shaft sleeve, one end of the clutch shaft sleeve being used for being connected with a locking rod, the locking rod being connected with a well lid, when the clutch shaft sleeve rotates relative to the support, the locking rod can be driven to move relative to the well lid, so as to open the well lid; the well lid lock further comprises a clutch mechanism arranged in a cavity of the clutch shaft sleeve, and further comprises a first lock tongue capable of sliding relative to the support, when the well lid lock is in a locking state, the first lock tongue slides towards the direction of the clutch shaft sleeve and can contact the clutch shaft sleeve to block the rotation of the clutch shaft sleeve, at this time, the clutch shaft sleeve cannot open the well lid, at the same time, the clutch mechanism can rotate independently, and the rotating power cannot be transmitted to the clutch shaft sleeve, therefore, the handle shaft connected with the clutch mechanism does not need to be fixed by a bolt in the locking state, so that the problem that the well lid lock is easily damaged by violent twisting of the handle by an operator in the locking state can be reduced, and the service life of the well lid lock is improved; in an unlocking state, the first lock tongue slides away from the clutch shaft sleeve, the clutch mechanism is connected with the clutch shaft sleeve, the clutch mechanism can drive the clutch shaft sleeve to rotate, and then the locking rod is moved to open the well lid. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments of the present application. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0025] Figure 1 The well lid lock provided in the embodiments of the present application is shown in the structural schematic diagram.

[0026] Figure 2 The well lid lock provided in the embodiments of the present application is shown in the structural schematic diagram.

[0027] Figure 3 The well lid lock provided in the embodiments of the present application is shown in the structural schematic diagram.

[0028] Figure 4 The well lid lock provided in the embodiments of the present application is shown in the structural schematic diagram.

[0029] Figure 5 The well lid lock provided in the embodiments of the present application is shown in the structural schematic diagram.

[0030] Figure 6 The well lid lock provided in the embodiments of the present application is shown in the structural schematic diagram.

[0031] Figure 7 The knob provided in the embodiments of the present application is shown in the structural schematic diagram.

[0032] Figure 8 Different partial explosion structure schematic diagram of the well lid lock provided by the embodiment of the present application;

[0033] Figure 9 Structure schematic diagram of the well lid lock from another perspective provided by the embodiment of the present application;

[0034] Figure 10 Explosion structure schematic diagram of the well lid lock from another perspective provided by the embodiment of the present application;

[0035] Figure 11 Assembly structure schematic diagram of the well lid lock and the well lid provided by the embodiment of the present application.

[0036] Icon: 1-support; 2-clutch shaft sleeve; 21-through hole; 22-groove; 23-arc-shaped slot; 3-clutch shaft; 31-elastic assembly; 4-driving member; 5-transmission assembly; 6-first lock tongue; 61-protruding part; 7-first sliding member; 8-handle rotating shaft; 9-second lock tongue; 10-first elastic member; 11-second sliding member; 12-knob; 121-stop part; 13-rotating cap; 14-lock cylinder; 141-positioning part; 142-second notch; 143-positioning slot; 15-locking member; 151-first notch; 16-first magnetic member; 17-second magnetic member; 18-driving shaft; 19-output shaft; 20-underground knob; 201-connecting sheet; 202-connecting rod; 203-locking rod; 24-fixing block; 25-rotating disc; 26-upper shell; 27-second micro switch; 28-third micro switch; 29-second lock tongue shell; 30-supporting plate. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

[0038] It should be noted that: similar labels and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. Meanwhile, in the description of the present application, the terms “first”, “second” and the like are only used for distinguishing description, and cannot be understood as indicating or implying relative importance.

[0039] In the prior art, when the handle is driven by external force, the handle and the internal structure of the well lid lock will be damaged, which affects the use of the well lid lock, because the handle rotating shaft is fixedly connected by the latch when the well lid is locked, the handle is connected with the handle rotating shaft, and the handle is exposed above the well lid. Figure 1 、 2As shown in 1, 2, 3, 4, 5, 6, 7, 8, 9, and 11, the manhole cover lock comprises a support 1, and further comprises a clutch shaft sleeve 2 connected with the support 1, the support 1 plays a supporting and positioning role on the clutch shaft sleeve 2, one end of the clutch shaft sleeve 2 is used for being connected with a locking rod 203 connected with the manhole cover, when the clutch shaft sleeve 2 rotates relative to the support 1, the locking rod 203 can be driven to move relative to the manhole cover, so as to open the manhole cover; the manhole cover lock further comprises a clutch mechanism arranged in a cavity of the clutch shaft sleeve 2, and further comprises a first lock tongue 6 capable of sliding relative to the support 1, in the locking state, the first lock tongue 6 slides towards the clutch shaft sleeve 2 and can contact the clutch shaft sleeve 2 to block the rotation of the clutch shaft sleeve 2, at this time, the clutch shaft sleeve 2 cannot open the manhole cover, and the clutch mechanism can rotate independently, and the rotating power cannot be transmitted to the clutch shaft sleeve 2, so that the handle shaft 8 connected with the clutch mechanism does not need to be fixed by a bolt in the locking state, so that the operation steps of the operator can be reduced and the operation convenience can be improved; in the unlocking state, the first lock tongue 6 slides away from the clutch shaft sleeve 2, the clutch mechanism is connected with the clutch shaft sleeve 2, the clutch mechanism can drive the clutch shaft sleeve 2 to rotate, and then the locking rod 203 moves to open the manhole cover.

[0040] As shown in Figure 2 , 3 , 4, 8, 9, and 11, the manhole cover lock comprises a support 1, and further comprises a clutch shaft sleeve 2 connected with the support 1, the support 1 plays a supporting and positioning role on the clutch shaft sleeve 2, one end of the clutch shaft sleeve 2 is used for being connected with a locking rod 203 connected with the manhole cover, when the clutch shaft sleeve 2 rotates relative to the support 1, the locking rod 203 can be driven to move relative to the manhole cover, so as to open the manhole cover; the manhole cover lock further comprises a clutch mechanism arranged in a cavity of the clutch shaft sleeve 2, and further comprises a first lock tongue 6 capable of sliding relative to the support 1, in the locking state, the first lock tongue 6 slides towards the clutch shaft sleeve 2 and can contact the clutch shaft sleeve 2 to block the rotation of the clutch shaft sleeve 2, at this time, the clutch shaft sleeve 2 cannot open the manhole cover, and the clutch mechanism can rotate independently, and the rotating power cannot be transmitted to the clutch shaft sleeve 2, so that the handle shaft 8 connected with the clutch mechanism does not need to be fixed by a bolt in the locking state, so that the operation steps of the operator can be reduced and the operation convenience can be improved; in the unlocking state, the first lock tongue 6 slides away from the clutch shaft sleeve 2, the clutch mechanism is connected with the clutch shaft sleeve 2, the clutch mechanism can drive the clutch shaft sleeve 2 to rotate, and then the locking rod 203 moves to open the manhole cover.

[0041] As shown in Figure 1 , optionally, the manhole cover lock further comprises a handle shaft 8 and a handle, the handle is connected with the handle shaft 8 through a connecting shaft, one end of the handle shaft 8 is a square positioning end, which can be inserted into the clutch shaft 3 to realize that the rotating handle can drive the clutch shaft 3 to rotate.

[0042] Optionally, the clutch shaft sleeve 2 has a columnar structure, and the support 1 is provided with a through columnar cavity for accommodating the clutch shaft sleeve 2, and the bottom end surface of the clutch shaft sleeve 2 abuts against the support 1.

[0043] As shown in Figure 1 and 11 , optionally, the manhole cover lock further comprises an upper shell 26 and a lower shell, the upper shell 26 is connected with the lower shell in a buckling mode, the upper shell 26 is used for being connected with the manhole cover through bolts, the upper shell 26 and the lower shell are used for accommodating other parts in the manhole cover lock, and the support 1 is connected with the lower shell through screws.

[0044] Optionally, the handle shaft 8 penetrates through an end cover of the upper shell 26 and is sealingly connected with the end cover, and the handle shaft 8 and the upper shell 26 are connected through a clasp spring.

[0045] AsFigure 2 As shown, optionally, the bottom of the clutch shaft 3 is also provided with a protrusion, avoiding the bottom surface of the clutch shaft 3 from contacting the bottom surface of the chamber, so as to reduce the contact area between the clutch shaft 3 and the clutch shaft sleeve 2, further reducing the friction, facilitating the rotation of the clutch shaft 3 relative to the clutch shaft sleeve 2.

[0046] As shown in Figure 2 , 3 , 8 and 9, optionally, the manhole cover lock further comprises a screw, which can be inserted from the outside of the support 1 and abut against the outer surface of the clutch shaft sleeve 2, the outer surface of the clutch shaft sleeve 2 is provided with an arc-shaped groove 23, the screw abuts in the arc-shaped groove 23, the extension direction of the arc-shaped groove 23 can be clockwise, so that the clutch shaft sleeve 2 can rotate clockwise, the screw limits the rotation direction of the clutch shaft sleeve 2, at the same time, the screw can also limit the clutch shaft sleeve 2 in the axial direction, improving the stability between the clutch shaft sleeve 2 and the support 1; of course, the extension direction of the arc-shaped groove 23 can also be counterclockwise.

[0047] Optionally, the connection between the clutch shaft sleeve 2 and the locking rod 203 can be indirect connection.

[0048] Optionally, the arc length of the arc-shaped groove 23 can be one quarter of the length of the clutch shaft sleeve 2 in the circumferential direction, so that the handle can be rotated by 90° for unlocking and locking.

[0049] As shown in Figure 2 and 9 , as an embodiment, the side wall of the clutch shaft sleeve 2 is provided with a through hole 21, in the locked state, the abutting end of the first lock tongue 6 penetrates into the through hole 21 and abuts against the clutch mechanism, thereby stopping the clutch shaft sleeve 2, and the clutch mechanism is not connected with the clutch shaft sleeve 2 and can rotate independently in the chamber, so as to realize that the handle shaft 8 does not need to be fixed by the latch in the locked state, and the handle can be freely idled.

[0050] Optionally, the abutting end of the first lock tongue 6 is provided with a protruding column which can be inserted into the through hole 21.

[0051] As shown in Figures 1 to 3 , as an embodiment, the clutch mechanism comprises a clutch shaft 3 for connecting with the handle shaft 8, the clutch shaft 3 is provided with a containing cavity; the clutch mechanism further comprises an elastic assembly 31, which is located in the containing cavity; in the locked state, the first lock tongue 6 penetrates into the through hole 21 and abuts against the elastic assembly 31, the elastic assembly 31 is compressed in the containing cavity, and the elastic assembly 31 is not connected with the clutch shaft sleeve 2, so that the clutch shaft 3 and the elastic assembly 31 can rotate independently in the chamber; in the unlocked state, the first lock tongue 6 slides away from the through hole 21, and the elastic assembly 31 penetrates into the through hole 21 and connects with the clutch shaft sleeve 2, so as to realize the connection between the clutch shaft 3 and the clutch shaft sleeve 2.

[0052] Optionally, the accommodating cavity is arranged along the axial direction perpendicular to the clutch shaft 3, so that the elastic assembly 31 can be inserted into the through hole 21.

[0053] As shown in Figure 3 , optionally, the elastic assembly 31 includes a spring and an ejection pin. In the locked state, the ejection pin is pushed into the accommodating cavity by the first lock tongue 6. In the unlocked state, the first lock tongue 6 exits the through hole 21, and the end of the ejection pin is pushed into the through hole 21 by the spring, and the remaining part abuts against the circumferential side of the through hole 21.

[0054] As shown in Figure 3 , 8 and 9, as an embodiment, the cover lock further includes a driving member 4 connected with the support member 1. The driving member 4 is connected with the first lock tongue 6 through a transmission assembly 5. The driving member 4 is used to drive the first lock tongue 6 to slide relative to the support member 1, so as to realize the unlocking and locking actions of the first lock tongue 6.

[0055] Optionally, the driving member 4 and the first lock tongue 6 are indirectly connected through the transmission assembly 5, the first sliding member 7 and the first elastic member.

[0056] Optionally, the driving member 4 can be a driving motor. The driving motor can be forward rotated or reverse rotated. The forward rotation is the unlocked state, and the reverse rotation is the locked state. The transmission assembly 5 includes at least two gears meshing with each other. One of the gears is fixed on the motor shaft of the driving motor, and the other gear is connected with the first sliding member 7.

[0057] Optionally, the upper end of the clutch sleeve 2 is further provided with a micro switch. When the micro switch detects the rotation of the clutch sleeve 2, which corresponds to the unlocked state, the micro switch will transmit a signal to the driving motor. The driving motor will be reversed to be locked. However, when the driving motor responds quickly during the locking, the clutch sleeve 2 has not been rotated to the position or has not been rotated. At this time, the first lock tongue 6 abuts against the outer circumferential wall surface of the clutch sleeve 2. When the clutch sleeve 2 is rotated to the position, the first lock tongue 6 is inserted into the through hole 21.

[0058] Optionally, when the driving motor is forward rotated to be unlocked, if the signal of the micro switch is not received within 10 seconds, it is proved that the operator forgets to unlock, that is, the operator does not rotate the handle. At this time, the driving motor will be reversed to be locked.

[0059] Optionally, the gear can be connected with the first sliding member 7 through a gear shaft.

[0060] As shown in Figure 2 , 3As shown in Figure 9, in one embodiment, the manhole cover lock also includes a first elastic element 10 and a first sliding element 7. The first sliding element 7 is connected to the first locking tongue 6 through the first elastic element 10. The transmission assembly 5 is connected to the first sliding element 7 and the driving element 4. Since the driving element 4 responds relatively quickly, by setting the first elastic element 10 between the first sliding element 7 and the first locking tongue 6, the driving element 4 can be prevented from directly controlling the first locking tongue 6. During the locking process, the distance between the first locking tongue 6 and the clutch bushing 2 is short. If the driving element 4 is directly connected to the first locking tongue 6, it will cause the first locking tongue 6 to quickly abut against the clutch bushing 2. At this time, the clutch bushing 2 has not yet rotated. If the first locking tongue 6 is not properly positioned, the contact force between the first locking tongue 6 and the clutch bushing 2 will be too large, affecting the rotation and reset of the clutch bushing 2 and easily causing the drive component 4 to stall. However, by setting the first elastic element 10, when the first locking tongue 6 abuts against the clutch bushing 2, the drive component 4 continues to drive the first sliding element 7, thereby compressing the first elastic element 10. The first elastic element 10 can buffer part of the clamping force generated by the drive component 4, while also satisfying the rotation stroke of the drive component 4. Furthermore, it ensures that the force of the first locking tongue 6 abutting against the clutch bushing 2 and the force of insertion into the through hole 21 are the elastic force of the first elastic element 10 during compression, thus preventing the well cover lock from jamming.

[0061] like Figure 2 and 4 As shown, optionally, a through area is provided above the first locking tongue 6, and a part of the first sliding member 7 protrudes through the through area. The manhole cover lock is also provided with two second micro switches 27 for detecting the displacement of the protruding part of the first sliding member 7. The limit position that the first sliding member 7 can move will be fed back through the two second micro switches 27. If the micro switches do not detect a signal at a certain moment, it means that the first sliding member 7 is stuck. At this time, the drive member 4 will be closed to avoid the drive member 4 from being blocked.

[0062] Optionally, when the motor shaft of the drive component 4 rotates a certain number of revolutions, the first sliding component 7 will trigger two second micro switches 27, and the drive component 4 will stop rotating.

[0063] Optionally, the distance that the first sliding member 7 can move is less than the through area of ​​the first locking tongue 6, thereby providing a certain amount of compression for the first elastic member 10, so that the first locking tongue 6 can be inserted into the through hole 21 by elastic force.

[0064] like Figure 9 As shown, optionally, the first locking tongue 6 forms a cavity structure, and the first sliding member 7 is located in the cavity. At the same time, both the first locking tongue 6 and the first sliding member 7 include two abutting walls that can abut against the first elastic member 10.

[0065] Optionally, when the driving motor rotates forward, the gear connected with the first sliding piece 7 rotates counterclockwise, at this time, the first sliding piece 7 moves away from the direction of the clutch shaft sleeve 2, at the same time, the first sliding piece 7 is in a state of adhesion with the first lock tongue 6, and also drives the first lock tongue 6 to move synchronously, at this time, it is in an unlocked state; when the driving motor reverses, the gear connected with the first sliding piece 7 rotates clockwise, at this time, the first sliding piece 7 moves towards the direction of the clutch shaft sleeve 2, at the same time, the first elastic piece 10 between the first lock tongue 6 and the first sliding piece 7 is compressed, and the elastic force of the first elastic piece 10 is transmitted to the first lock tongue 6, and the first lock tongue 6 moves towards the direction of the clutch shaft sleeve 2. Since the driving piece 4 responds quickly, when the driving piece 4 receives the rotation signal of the clutch shaft sleeve 2, it starts to reverse, at this time, the first lock tongue 6 is abutted on the outer wall of the clutch shaft sleeve 2, but the clutch shaft sleeve 2 has not yet returned to the unlocked state, that is, the first lock tongue 6 is not aligned with the through hole 21, and the first lock tongue 6 cannot be inserted into the through hole 21. It is necessary to return the handle to reset the clutch shaft sleeve 2, so that the first lock tongue 6 is aligned with the through hole 21 and inserted into it, and the locking action is completed.

[0066] As shown in Figure 4 Optionally, the manhole cover lock further comprises two third micro switches 28, and the two third micro switches 28 are used to detect the movement distance of the first lock tongue 6.

[0067] Optionally, the manhole cover lock further comprises a control circuit board, and the micro switch, the second micro switch 27, the third micro switch 28 and the driving piece 4 are connected with the control circuit board.

[0068] As shown in Figure 2 and 5 Optionally, the upper part of the support piece 1 is further provided with a support plate 30, the support plate 30 is connected with the upper shell 26 and the control circuit board, and the handle shaft 8 and the lock cylinder 14 all pass through the support plate 30.

[0069] As shown in Figure 3 , 8 and 9, as an embodiment, the manhole cover lock further comprises a second lock tongue 9, and the second lock tongue 9 is slidable relative to the support piece 1; the outer peripheral wall of the clutch shaft sleeve 2 is provided with a groove 22, and in the locked state, the second lock tongue 9 is used to abut in the groove 22 to limit the rotation of the clutch shaft sleeve 2. By providing the second lock tongue 9, the outer peripheral wall of the clutch shaft sleeve 2 is provided with the groove 22, the depth of the groove 22 is shallower than the depth of the through hole 21, the second lock tongue 9 will preliminarily limit the clutch shaft sleeve 2, avoid the rotation of the clutch shaft sleeve 2, and the insertion of the first lock tongue 6 in the through hole 21 will cause the friction between the first lock tongue 6 and the clutch shaft sleeve 2 to be larger, and the problem that the driving piece 4 cannot drive the first lock tongue 6 to move will occur.

[0070] Optionally, when the clutch shaft sleeve 2 rotates, the second lock tongue 9 will be separated from the groove 22 and always abut against the outer peripheral wall of the clutch shaft sleeve 2.

[0071] As shown in Figure 2 , 3 and 8, as an embodiment, the manhole cover lock further comprises a second sliding piece 11, the second sliding piece 11 abuts against the first lock tongue 6 and passes through the second lock tongue 9, the second sliding piece 11 is provided with an avoiding space, in the locked state, the second sliding piece 11 contacts the second lock tongue 9, thereby limiting the sliding of the second lock tongue 9, and the second lock tongue 9 cooperates with the first lock tongue 6 to form a two-stage locking mechanism; in the unlocked state, the first lock tongue 6 moves away from the direction of the clutch shaft sleeve 2, and simultaneously drives the second sliding piece 11 to move along the direction perpendicular to the sliding direction of the second lock tongue 9, when the second sliding piece 11 moves downward, the avoiding space can be aligned with the second lock tongue 9, and then the clutch shaft sleeve 2 is rotated, the second lock tongue 9 is separated from the groove 22, and the second lock tongue 9 slides backward to the position of the avoiding space, and the avoiding space leaves space for the sliding of the second lock tongue 9.

[0072] Optionally, the second sliding piece 11 and the second lock tongue 9 are arranged perpendicular to each other, thereby limiting the sliding of the second lock tongue 9 in the horizontal direction.

[0073] As shown in Figure 2 and 3 , optionally, the manhole cover lock further comprises a second lock tongue shell 29, the second lock tongue shell 29 is detachably connected with the bottom wall of the support 1, and the second lock tongue shell 29 can support the second lock tongue 9 and the second lock tongue spring; the second lock tongue spring is connected with the second lock tongue 9, so that the second lock tongue 9 can abut in the groove 22.

[0074] As shown in Figure 2 and 3 , optionally, the manhole cover lock further comprises a second sliding piece spring, the second sliding piece spring is arranged in the second lock tongue shell 29, and the second sliding piece 11 and the first lock tongue 6 are provided with guide inclined surfaces, in the unlocking process, the first lock tongue 6 retreats, which can make the second sliding piece 11 move downward, at the same time, the support 1 is provided with a through region for the upward and downward sliding of the second sliding piece 11, so that the second sliding piece 11 can only slide upward and downward, the second sliding piece slides downward, compresses the second sliding piece spring, and at the same time, the avoiding space is aligned with the second lock tongue 9.

[0075] Optionally, the well lid lock is also provided with a light guide column, which can be used to observe the indicator light. Electrical unlocking process: lift the handle to activate the well lid lock to enter the wake-up state, observe the indicator light through the light guide column, and the indicator light flashes green. Use the mobile phone Bluetooth to connect with the well lid lock control circuit board, and the indicator light flashes green slowly. The mobile phone Bluetooth sends an unlocking instruction, the well lid lock authenticates the authorization instruction, the control circuit board drives the driving member 4 to rotate forward, and the action of the driving member 4 is transmitted in turn through the gear assembly, the first sliding member 7 and the first lock tongue 6. The motor shaft of the driving member 4 rotates to the corresponding number of turns, the first sliding member 7 triggers one of the second micro switches 27, and the driving member 4 stops rotating forward. The first lock tongue 6 exits the clutch shaft sleeve 2 and moves to the unlocking position, triggers one of the third micro switches 28, gives the ejection pin a movement allowance, releases the spring force connected with the ejection pin, and pushes the ejection pin into the clutch shaft sleeve 2, so that the clutch shaft 3 is connected with the clutch shaft sleeve 2.

[0076] The second sliding member 11 is pushed downward by the first lock tongue 6, the second sliding member spring is compressed to store power, the second lock tongue 9 is given a movement allowance, and the indicator light is green all the time.

[0077] The electrical unlocking of the well lid lock is completed, the handle is rotated clockwise to the mechanical limit, and the opening of the well lid is completed.

[0078] The rotation of the handle triggers the micro switch for detecting the clutch shaft sleeve 2, and the action of the handle is transmitted in turn through the handle rotating shaft 8, the clutch shaft 3, the ejection pin, the clutch shaft sleeve 2, the output shaft 19 and the driving shaft 18. Through the driving shaft 18, the locking rod 203 of the well lid is retracted, at the same time, the second lock tongue 9 is pushed out by the clutch shaft sleeve 2, and the second lock tongue spring is compressed to store power.

[0079] The unlocking instruction can also be issued through the communication line or the computer key inserted into the wireless module.

[0080] Electrical locking process:

[0081] After the electrical unlocking of the well lid lock, the handle is rotated clockwise to the mechanical limit, the opening of the well lid is completed, the control circuit board drives the driving member 4 to rotate reversely, and the action of the driving member 4 is transmitted in turn through the gear assembly, the first sliding member 7 and the first lock tongue spring. The first sliding member 7 compresses the first lock tongue spring to store power. The motor shaft of the driving member 4 rotates to the corresponding number of turns, the first sliding member 7 triggers another second micro switch 27, and the driving member 4 stops rotating reversely. The handle is rotated counterclockwise by 90°, the well lid is closed, and the action of the handle is transmitted in turn through the handle rotating shaft 8, the clutch shaft 3, the ejection pin, the clutch shaft sleeve 2, the output shaft 19 and the driving shaft 18. Through the driving shaft 18, the locking rod 203 of the well lid is extended.

[0082] The first lock tongue spring is released, the first lock tongue 6 is pushed to extend into the clutch sleeve 2 and moves to the locking position, triggers another third micro switch 28, the first lock tongue 6 pushes the ejector pin into the clutch shaft 3, so that the clutch shaft 3 is separated from the clutch sleeve 2, at the same time, the second sliding piece 11 is moved to make room, the second sliding piece spring is released, the second sliding piece 11 is pushed to move upward, the second sliding piece 11 is moved to make room for the second lock tongue 9, the second lock tongue spring is released, the second lock tongue 9 is pushed to extend into the clutch sleeve 2, and the electric locking of the manhole cover lock is completed.

[0083] As shown in Figure 2 , 5 , 6 and 8, as an embodiment, the manhole cover lock further comprises a magnetic key, a knob 12 for cooperating with the magnetic key, a lock cylinder 14 located in the knob 12, at least one first magnetic piece 16 and a locking piece 15, the lock cylinder 14 abuts against the first lock tongue 6, the lock cylinder 14 can be rotated to drive the first lock tongue 6 to slide; the first magnetic piece 16 is connected with the locking piece 15 and is arranged at the top end of the lock cylinder 14, the locking piece 15 can slide relative to the lock cylinder 14 and is used for connecting with the knob 12, in the unlocked state, the magnetic key is used for connecting with the knob 12, the magnetic force generated by the magnetic key and the first magnetic piece 16 is used for moving the locking piece 15, the locking piece 15 is connected with the knob 12, the knob 12 drives the lock cylinder 14, and the lock cylinder 14 drives the first lock tongue 6 to slide, so that the purpose of the emergency unlocking of the magnetic key on the well is achieved. Compared with the mechanical keyhole which is easy to be invaded by dust, rain and other foreign matters, the magnetic unlocking can prolong the service life of the manhole cover lock.

[0084] In addition, when an emergency occurs, if the unlocking authorization is not obtained or the control circuit board fails, the staff on the well can try to use the inserted magnetic key to perform emergency unlocking.

[0085] Optionally, the magnetic force includes repulsion and attraction, that is, the first magnetic piece 16 can generate repulsion with the magnetic key to push the locking piece 15; of course, the magnetic key can also attract the first magnetic piece 16 to push the locking piece 15, as a preferred mode, the magnetic key generates repulsion with the first magnetic piece 16.

[0086] As shown in Figure 4 and 5 , optionally, the lock cylinder 14 and the first lock tongue 6 are indirectly connected through a rotating disc 25, that is, the lower end of the lock cylinder 14 is further provided with the rotating disc 25, the rotating disc 25 includes a columnar abutting portion, the upper portion of the first lock tongue 6 further includes a convex portion 61, the columnar abutting portion abuts against the convex portion 61, when the lock cylinder 14 rotates, the columnar abutting portion always abuts against the convex portion 61, so that the first lock tongue 6 moves.

[0087] Optionally, unlike the driving method of the driving component 4, the lock cylinder 14 directly drives the first bolt 6 to move instead of the first sliding component 7. This is because the first sliding component 7 is connected to the driving component 4. If the lock cylinder 14 directly drives the first sliding component 7, there will be a situation where it cannot be driven. However, if the first bolt 6 is directly driven, the first bolt 6 will compress the first elastic component 10.

[0088] like Figure 1 , 2 As shown in Figures 6, 8, and 10, in one embodiment, the magnetic key includes a first magnetic mating member that mates with the first magnetic member 16 and a rotating cap 13. The first magnetic mating member is connected to the rotating cap 13, and the rotating cap 13 is adapted to one end of the knob 12. The first magnetic member 16 is disposed on one side of the locking member 15 and is aligned with the sliding direction of the locking member 15. The first magnetic mating member is disposed on the side wall of the rotating cap 13. Thus, when the rotating cap 13 is engaged with the upper end of the knob 12, the first magnetic mating member and the first magnetic member 16 generate a magnetic force, which causes the locking member 15 to move. The locking member 15 can then connect with the knob 12, controlling the rotation of the rotating cap 13. The rotational force is transmitted from the knob 12 to the locking member 15, which in turn drives the lock cylinder 14 to rotate.

[0089] Optionally, the cap 13 has a polygonal structure, and the top of the knob 12 also has a polygonal structure.

[0090] Optionally, two first magnetic elements 16 can be provided to increase the repulsive force, and the number of first magnetic mating parts corresponds to the number of first magnetic elements 16.

[0091] like Figure 8 As shown, in one embodiment, the locking member 15 is further provided with a through area, and one end of the lock cylinder 14 is provided with a positioning part 141. The positioning part 141 is located in the through area. The manhole cover lock also includes a second elastic member. The two ends of the second elastic member abut against the locking member 15 and the positioning part 141 respectively. When the knob cap 13 is removed, the first magnetic member 16 cancels the repulsive force, and the second elastic member restores the elastic force, so that the locking member 15 is separated from the knob 12.

[0092] Optionally, the locking element 15 is located on the top of the lock cylinder 14, so that the knob 12 is engaged with the upper end of the lock cylinder 14 for restraint. The lock cylinder 14 and the knob 12 can be connected by screws.

[0093] Optionally, the radial dimension of the position at the top of the lock cylinder 14 where it connects with the locking member 15 should be smaller than the other dimensions of the whole, so as to provide sliding space for the locking member 15 to slide.

[0094] Optionally, the positioning part 141 is provided with the opposite end of the first magnetic part 16, so that the repulsion force generated by the first magnetic part 16 and the first magnetic matching part can compress the second elastic part; of course, in some cases, if the first magnetic part 16 and the first magnetic matching part generate mutual attraction, the positioning part 141 is provided at the end close to the first magnetic part 16.

[0095] As shown in Figure 8 and 10 As an embodiment, the first notch 151 is provided on one side of the locking part 15 along the sliding direction, and the lock core 14 is provided with a second notch 142 corresponding to the first notch 151, and the first notch 151 and the second notch 142 cooperate to form a containing area for containing the second magnetic part 17. In the locked state, the second magnetic part 17 is in the containing area, and the second magnetic part 17 can limit the sliding of the locking part 15, so as to avoid the external strong magnetic structure close to the first magnetic part 16, which is easy to cause accidental unlocking. The second magnetic part 17 is provided, which is equivalent to setting two unlocking mechanisms for the magnetic unlocking of the manhole cover lock, that is, only when the first magnetic part 16 and the second magnetic part 17 are both magnetized, the lock can be unlocked. In the unlocked state, the second magnetic part 17 is away from the containing area, so that the locking part 15 can slide, so that the locking part 15 can be connected with the knob 12 to realize unlocking.

[0096] Optionally, the first notch 151 is semicircular, and the second notch 142 is also semicircular.

[0097] Optionally, the first magnetic part 16 and the second magnetic part 17 can be magnetic steel.

[0098] Optionally, the second magnetic part 17 can be away from the containing area by repulsion or by attraction. The embodiment of the present application adopts the repulsion mode.

[0099] Optionally, the second magnetic part 17 can be provided with four, that is, two on each side of the locking part 15 along the sliding direction.

[0100] As an embodiment, the magnetic key further comprises a second magnetic matching part, the second magnetic matching part is connected with the rotating cap 13, and the second magnetic matching part is used to make the second magnetic part 17 away from the containing area.

[0101] Optionally, the number of the second magnetic matching part corresponds to the number of the second magnetic part 17.

[0102] Optionally, the second magnetic matching part is provided on the top of the rotating cap 13, so that when the rotating cap 13 cooperates with the knob 12, the second magnetic matching part can be aligned with the second magnetic part 17.

[0103] Optionally, the knob 12 is sealingly connected with the end cover of the upper shell 26.

[0104] As shown in Figure 10 , as an embodiment, the lock cylinder 14 is further provided with a positioning slot 143 for accommodating the second magnetic member 17, the positioning slot 143 is communicated with the second gap 142, the second magnetic member 17 is used to move the first magnetic member 16 from the accommodating area into the positioning slot 143, and the second magnetic member 17 enters the positioning slot 143 and cannot limit the locking member 15 which can slide.

[0105] Optionally, a supporting spring is further arranged in the positioning slot 143, the supporting spring is connected with the second magnetic member 17, when the second magnetic member 17 is subjected to the repulsion, the supporting spring can be compressed and enter the positioning slot 143, and when the repulsion ends, the supporting spring restores the elastic force.

[0106] As shown in Figure 7 , as an embodiment, the knob 12 comprises a plurality of stop portions 121 which are arranged at intervals, the locking member 15 can be inserted between two adjacent stop portions 121 in the locked state, the locking rod 203 is inserted into the knob 12, and the knob 12 can drive the lock cylinder 14 to rotate.

[0107] Optionally, when the locking member 15 is pushed to abut against the stop portion 121 by the repulsion, the cap 13 can be slightly rotated, the cap 13 drives the knob 12, and the locking member 15 can be inserted between two adjacent stop portions 121.

[0108] Uphole emergency unlocking:

[0109] Lift the handle, insert the magnetic key, the second magnetic member 17 is subjected to the repulsion of the second magnetic member and moves downward, the second magnetic member 17 compresses the supporting spring to store energy, and simultaneously gives the locking member 15 a movement allowance; the first magnetic member 16 is subjected to the repulsion of the first magnetic member, pushes the locking member 15 to extend out of the lock cylinder 14, compresses the second elastic member to store energy, connects the lock cylinder 14 with the knob 12; rotate the magnetic key clockwise to the mechanical limit position, the action of the magnetic key is transmitted through the knob 12, the locking member 15, the lock cylinder 14, the rotating disc 25 and the first lock tongue 6, the first lock tongue 6 moves to the unlocking position by exiting the clutch shaft sleeve 2, triggers one of the third micro switches 28, gives the ejection pin a movement allowance, the ejection pin spring releases the elastic force, pushes the ejection pin to extend into the clutch shaft sleeve 2, connects the clutch shaft 3 with the clutch shaft sleeve 2; the second sliding member 11 is pushed downward by the first lock tongue 6, compresses the second sliding member spring to store energy, gives the second lock tongue 9 a movement allowance, and the uphole emergency unlocking is completed. Rotate the handle clockwise by 90° to complete the opening of the well lid.

[0110] The handle rotation triggers the micro switch, and the handle action is transmitted through the handle shaft 8, the clutch shaft 3, the ejection pin, the clutch shaft sleeve 2, the output shaft 19, and the drive shaft 18. The drive shaft 18 retracts the locking rod 203 of the manhole cover, and the second lock tongue 9 is ejected by the clutch shaft sleeve 2, and the second lock tongue spring is compressed.

[0111] Emergency unlocking after locking on the well:

[0112] After the completion of the opening of the manhole cover, the magnetic key can be directly pulled out, the second elastic element releases the elastic force, pushes the locking element 15 to retract inside the lock cylinder 14, and separates the lock cylinder 14 from the rotary knob 12. The handle is rotated counterclockwise by 90° to close the manhole cover, and the handle action is transmitted through the handle shaft 8, the clutch shaft 3, the ejection pin, the clutch shaft sleeve 2, the output shaft 19, and the drive shaft 18. The drive shaft 18 extends the locking rod 203 of the manhole cover. The first lock tongue spring releases the elastic force, pushes the first lock tongue 6 to extend into the clutch shaft sleeve 2 and move to the locking position, triggers another third micro switch 28, and the first lock tongue 6 pushes the ejection pin into the clutch shaft 3, so that the clutch shaft 3 is separated from the clutch shaft sleeve 2, and the second sliding element 11 is moved to the side. The first lock tongue 6 pushes the rotating disc 25 and the lock cylinder 14 to rotate back to the initial position; the second sliding element spring releases the elastic force, pushes the second sliding element 11 to move upward, and gives the second lock tongue 9 a movement allowance. The second lock tongue spring releases the elastic force, pushes the second lock tongue 9 to extend into the groove 22 of the clutch shaft sleeve 2, and the locking after the emergency unlocking on the well is completed.

[0113] As shown in Figure 2 , 8 , 10 and 11, as an embodiment, the manhole cover lock further comprises a drive shaft 18 and an output shaft 19, the two ends of the output shaft 19 are connected with the clutch shaft sleeve 2 and the drive shaft 18 respectively, the drive shaft 18 can rotate independently relative to the output shaft 19, and the drive shaft 18 is used to be connected with the locking rod 203, so as to realize the emergency unlocking underground.

[0114] Optionally, under normal circumstances, the drive shaft 18 and the output shaft 19 are connected through a plug pin, so that the power on the well can be transmitted to the underground, and the manhole cover lock further comprises a downhole rotary knob 20, the downhole rotary knob 20 is clamped with the drive shaft 18, and a fixed connecting piece 201.

[0115] When there is a worker underground and the manhole cover is accidentally closed by the personnel on the well, emergency unlocking can be performed underground.

[0116] Pull out the plug pin to separate the drive shaft 18 from the output shaft 19, and rotate the downhole rotary knob 20 counterclockwise to the mechanical limit, so that the drive shaft 18 retracts the locking rod 203 of the manhole cover, and the opening of the manhole cover is completed. After the completion of the emergency unlocking underground, the worker needs to complete an electrical unlocking or an emergency operation on the well, and then inserts the plug pin into the output shaft 19 to connect the drive shaft 18 with the output shaft 19.

[0117] As shown in Figure 11 one embodiment, the manhole cover lock further comprises a connecting piece 201, a connecting rod 202 and a locking rod 203, the connecting piece 201 is connected with the driving shaft 18, the two ends of the connecting rod 202 are respectively rotatably connected with the connecting piece 201 and the locking rod 203, and the locking rod 203 is used to be connected with the manhole cover, so that when the driving shaft 18 is driven to rotate, the connecting piece 201 can be driven to rotate, the connecting piece 201 drives the connecting rod 202, and the connecting rod 202 pulls the locking rod 203.

[0118] Optionally, the underground knob 20 is used to clamp the connecting piece 201 in cooperation with the driving shaft 18.

[0119] As shown in Figure 11 Optionally, the lower end surface of the manhole cover is provided with a plurality of fixing blocks 24, the locking rod 203 can be inserted into the fixing blocks 24, and in the unlocking state, the locking rod 203 does not leave the fixing blocks 24.

[0120] Optionally, in the locking state, the locking rod 203 protrudes from the edge of the manhole cover, so that the locking rod 203 is clamped in other positions and the manhole cover cannot be opened by the operator on the ground; in the unlocking state, the locking rod 203 moves to the inside of the edge of the manhole cover but does not leave the fixing blocks 24, so that the manhole cover can be opened by the operator on the ground.

[0121] The above only describes the embodiments of the present application and is not used to limit the protection scope of the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

[0122] The above only describes the embodiments of the present application and is not used to limit the protection scope of the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

[0123] It is to be noted that, as used in this specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to "a component" can include a combination of two or more components. Additionally, the terms "comprise," "comprises," and "comprising," or any variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements is not necessarily limited to those elements, but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Furthermore, unless otherwise indicated herein, the terms "first," "second," "third," etc., are used herein merely as labels, and are not intended to impose ordinal import.

Claims

1. A well lid lock, characterized in that The manhole cover lock comprises a support, a clutch sleeve connected with the support, one end of the clutch sleeve being used for connecting with a locking rod, the clutch sleeve being rotatable relative to the support and used for driving the locking rod connected with the manhole cover to move, a clutch mechanism arranged in a cavity of the clutch sleeve and used for connecting with a handle rotating shaft, a first locking tongue being slidable relative to the support, a locking state in which the first locking tongue slides towards the clutch sleeve and is used for contacting the clutch sleeve to block the rotation of the clutch sleeve, the clutch mechanism being independently rotatable, and an unlocking state in which the first locking tongue slides away from the clutch sleeve, the clutch mechanism being connected with the clutch sleeve and being used for driving the clutch sleeve to rotate. A side wall of the clutch sleeve is provided with a through hole, and an abutting end of the first locking tongue can penetrate into the through hole and abut against the clutch mechanism. The clutch mechanism comprises a clutch shaft used for connecting with the handle rotating shaft, and the clutch shaft is provided with a containing cavity. The clutch mechanism further comprises an elastic assembly arranged in the containing cavity, in the locking state, the first locking tongue penetrates into the through hole and abuts against the elastic assembly, and the elastic assembly is compressed in the containing cavity, and in the unlocking state, the first locking tongue slides away from the through hole, and the elastic assembly penetrates into the through hole and is connected with the clutch sleeve. The manhole cover lock further comprises a driving member connected with the support, the driving member being connected with the first locking tongue through a transmission assembly, and the driving member is used for driving the first locking tongue to slide relative to the support. The manhole cover lock further comprises a first elastic member and a first sliding member, the first sliding member being connected with the first locking tongue through the first elastic member, and the transmission assembly is connected with the first sliding member and the driving member. The manhole cover lock further comprises a second locking tongue slidable relative to the support.

2. A lid lock according to claim 1, characterised in that An outer peripheral wall of the clutch sleeve is provided with a groove, in the locking state, the second locking tongue is used for abutting in the groove to limit the rotation of the clutch sleeve.

3. A lid lock according to claim 2, wherein The manhole cover lock further comprises a second sliding member abutting against the first locking tongue and penetrating through the second locking tongue, the second sliding member being provided with a avoiding space, in the locking state, the second sliding member contacts the second locking tongue to limit the sliding of the second locking tongue, and in the unlocking state, the first locking tongue moves away from the clutch sleeve, the second sliding member moves along a direction perpendicular to the sliding direction of the second locking tongue, and the second locking tongue can slide to a position of the avoiding space. The manhole cover lock further comprises a magnetic key, a knob used for cooperating with the magnetic key, a lock cylinder arranged in the knob, at least one first magnetic member and a locking member, the lock cylinder abutting against the first locking tongue, and the lock cylinder is rotatable to drive the first locking tongue to slide.

4. A cover lock according to any one of claims 1 to 3, characterised in that, ​ 5. A lid lock according to claim 4, wherein ​ 6. A lid lock according to claim 4, wherein ​ ​ 7. A lid lock according to claim 6, wherein ​ ​ ​ 8. A cover lock according to any one of claims 1 to 3, wherein ​ The first magnetic member is connected with the locking member and is arranged at one end of the lock cylinder, the locking member is slidable relative to the lock cylinder and is used to be connected with the knob, in the unlocked state, the magnetic key is used to be connected with the knob, the magnetic force generated by the magnetic key and the first magnetic member is used to slide the locking member, and the locking member is connected with the knob.

9. A lid lock according to claim 8, wherein, The magnetic key comprises a first magnetic matching member matched with the first magnetic member and a rotating cap, the first magnetic matching member is connected with the rotating cap, the rotating cap is matched with one end of the knob, the first magnetic member is arranged at one side of the locking member and is consistent with the sliding direction of the locking member, and the first magnetic matching member is arranged on the side wall of the rotating cap.

10. A lid lock according to claim 9, wherein, The locking member is further provided with a penetrating area, one end of the lock cylinder comprises a positioning portion, the positioning portion is located in the penetrating area, and the well lid lock further comprises a second elastic member, two ends of the second elastic member are respectively abutted against the locking member and the positioning portion.

11. A lid lock according to claim 10, wherein, The locking member is provided with a first notch at one side in the sliding direction, the lock cylinder is provided with a second notch corresponding to the first notch, the first notch and the second notch are matched to form an accommodation area for accommodating the second magnetic member, in the locked state, the second magnetic member is located in the accommodation area, and in the unlocked state, the second magnetic member is away from the accommodation area.

12. A lid lock according to claim 11, characterised in that, The magnetic key further comprises a second magnetic matching member, the second magnetic matching member is connected with the rotating cap, and the second magnetic matching member is used to make the second magnetic member away from the accommodation area.

13. A lid lock according to claim 12, wherein, The lock cylinder is further provided with a positioning groove for accommodating the second magnetic member, the positioning groove is communicated with the second notch, and the second magnetic matching member is used to move the first magnetic member from the accommodation area to the positioning groove.

14. The cover lock of claim 8, wherein, The knob comprises a plurality of stop portions arranged at intervals, the locking member can be inserted between adjacent two stop portions, the knob is used to drive the lock cylinder to rotate in the locked state.

15. A cover lock according to any one of claims 1 to 3, wherein The well lid lock further comprises a driving shaft and an output shaft, two ends of the output shaft are connected with the clutch shaft sleeve and the driving shaft respectively, the driving shaft is independently rotatable relative to the output shaft, and the driving shaft is used to be connected with the locking rod.

16. A lid lock according to claim 15, wherein, The well lid lock further comprises a connecting plate, a connecting rod and a locking rod, the connecting plate is connected with the driving shaft, two ends of the connecting rod are rotationally connected with the connecting plate and the locking rod respectively, and the locking rod is used to be connected with the well lid. The well lid lock further comprises a connecting plate, a connecting rod and a locking rod, the connecting plate is connected with the driving shaft, two ends of the connecting rod are rotationally connected with the connecting plate and the locking rod respectively, and the locking rod is used to be connected with the well lid.

Images