CN113415704A

CN113415704A - Elevator car door lock device and control method thereof

Info

Publication number: CN113415704A
Application number: CN202110821871.XA
Authority: CN
Inventors: 孙承斌
Original assignee: Flying Technology Co ltd
Current assignee: Flying Technology Co ltd
Priority date: 2021-07-19
Filing date: 2021-07-19
Publication date: 2021-09-21
Anticipated expiration: 2041-07-19
Also published as: CN113415704B

Abstract

The invention provides an elevator car door lock device and a control method thereof, wherein the device comprises a door vane bottom plate, a door vane arm component, a lock hook, a connecting rod component and a verification switch, wherein the verification switch comprises a switch contact and a switch socket; the connecting rod assembly is used for driving the door knife arm assembly to be inwards folded under the action of external force, and drives the hook end of the lock hook to downwards rotate, so that the switch contact is separated from the switch socket, unlocking is achieved, the connecting rod assembly is further used for driving the door knife arm assembly to outwards open, the hook end of the lock hook upwards rotates through the balancing weight, the switch contact is made to contact with the switch socket, and locking is achieved. Compared with the prior art, the mechanical part and the electrical part of the elevator door lock can be verified simultaneously, the reliability of the elevator door lock can be improved, the impact of a latch hook on a switch is reduced, and the switch door of the elevator is simplified and reliable through a linkage structure.

Description

Elevator car door lock device and control method thereof

Technical Field

The invention relates to an elevator accessory, in particular to an elevator car door lock device and a control method thereof.

Background

Nowadays, the elevator is taken as the most frequently used vertical transportation tool for modern people, so that the elevator not only solves the daily life requirements of people, but also plays an important role in promoting the development of human society, and the safety of the elevator has direct influence on our life and production.

In present traditional elevator sedan-chair door lock device, most sedan-chair door lock mechanical part and electric part are the detached action, the security of elevator sedan-chair door lock is guaranteed by machinery and electric two parts, mechanical part realizes that the door system is opened the door and is corresponding, electric part mainly realizes the control in lock return circuit, the sedan-chair door lock that sets up according to this kind of conventional method, not only need increase extra additional device, make sedan-chair door lock structure complicated, the cost of the increase maintenance degree of difficulty and elevator, and mechanical and electric security can not guarantee simultaneously, sedan-chair door lock reliability has been reduced, be difficult to avoid the emergence of accident.

Traditional elevator sedan-chair lock switch socket is setting up just, specifically, the power recess on the switch socket upwards, sets up like this in the switch slot and easily has the dust to pile up, and traditional elevator sedan-chair lock latch hook sets up downwards, and when closing the door locking, the latch hook is big to the impact of switch, damages the switch easily.

When the door was opened to the elevator under the multiple condition, specifically, when the car was in the switch door when the region of unblanking and the switch door when the region was unblanked to the non-, traditional elevator sedan-chair lock need realize through different modules, and the structure is complicated, and is with high costs, has reduced the security of elevator.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides an elevator car door lock device and a control method thereof, and the specific technical scheme is as follows:

an elevator car door lock apparatus comprising:

the door knife assembly and the lock hook are movably arranged on the door knife bottom plate, the verification switch comprises a switch contact and a switch socket, the switch contact is arranged on the lock hook, and the switch socket is arranged on an external base above the lock hook;

the connecting rod assembly is arranged on the lock hook and is rotatably connected with the door knife arm assembly, the lock hook comprises a tail end and a hook end with an upward tip, and a balancing weight is arranged on the tail end;

the connecting rod assembly is used for driving the door knife arm assembly to be folded inwards under the action of external force and driving the hook end of the lock hook to rotate downwards, so that the switch contact is separated from the switch socket to realize unlocking, and the connecting rod assembly is also used for driving the door knife arm assembly to be opened outwards so that the hook end of the lock hook rotates upwards through the balancing weight to enable the switch contact to contact the switch socket to realize locking.

In a specific embodiment, the door knife further comprises a starting block and a swing rod assembly, wherein the swing rod assembly is rotatably arranged on the door knife bottom plate and used for clamping the starting block;

the starting block is connected to the connecting rod assembly and used for pushing the connecting rod assembly to swing.

In a specific embodiment, the swing link assembly comprises a swing link and a swing link spring, the swing link is rotatably arranged on the door knife base plate and is elastically connected to the door knife base plate through the swing link spring, one end of the swing link is provided with a limit bearing, and the other end of the swing link is provided with a rolling bearing;

the limiting bearing is used for clamping the starting block, and the rolling bearing is used for contacting a curve plate on an outer door machine bottom plate to enable the swing rod to rotate and drive the limiting bearing to move on the starting block; the rolling bearing is also used for moving downwards through the swing rod spring to be separated from the curve plate, so that the swing rod rotates and drives the limiting bearing to be clamped with the starting block.

In a particular embodiment, the linkage assembly includes a first link, a second link, a third link, and a rotating member;

the first end of the first connecting rod, the first end of the second connecting rod and the first end of the third connecting rod are coaxially sleeved on the rotating piece;

the second end of the first connecting rod is arranged on the lock hook, the second end of the second connecting rod is rotatably connected to the door knife arm assembly, the second end of the third connecting rod is rotatably connected to the starting block, and a linkage assembly is formed among the first connecting rod, the second connecting rod and the third connecting rod.

In a particular embodiment, further comprising a resilient component;

the elastic component is arranged on the door vane bottom plate, is elastically connected to the starting block and is used for providing elastic force for the starting block.

In a specific embodiment, the door knife arm assembly comprises a left door knife arm, a right door knife arm, a first connecting block and a second connecting block;

the middle part of the first connecting block is hinged with the door vane bottom plate, and the starting block is connected with the first connecting block through the connecting rod assembly so as to drive the first connecting block to rotate under the driving of external force;

the left door knife arm, the first connecting block, the right door knife arm and the second connecting block are sequentially hinged to form a parallelogram structure, so that the starting block can finally drive the left door knife arm and the right door knife arm to be outwards opened or inwards clamped.

In a specific embodiment, the door knife further comprises an emergency unlocking device, the emergency unlocking device comprises an emergency unlocking sheet and an emergency unlocking tension spring, the emergency unlocking sheet is rotatably arranged on the door knife bottom plate, one end of the emergency unlocking tension spring is elastically connected to the emergency unlocking sheet, and the other end of the emergency unlocking tension spring is connected to the door knife bottom plate;

the emergency unlocking sheet is provided with a fixing part for fixing an external rescue rope, so that the rescue rope can drive the emergency unlocking sheet to rotate clockwise and press down the hook end of the lock hook, and the emergency unlocking tension spring accumulates potential energy;

when the rescue rope is released, the emergency unlocking tension spring releases potential energy, so that the emergency unlocking sheet rotates anticlockwise and is separated from the hook end of the locking hook.

The control method using the elevator car door lock device comprises the following specific operation steps:

when the car is in an unlocking area and a door opening instruction is received, the starting block drives the door knife arm component to fold inwards to clamp a landing door ball under the action of external force through the connecting rod component, a landing door lock is unlocked, meanwhile, the hook end of the lock hook rotates downwards through the connecting rod component, the switch contact is separated from the switch socket, unlocking is realized, and the car normally opens the door;

when the car is in the region of unblanking and receives the instruction of closing the door, antifriction bearing on the pendulum rod contacts the curve board on the outside door machine bottom plate, makes the pendulum rod rotates and drives spacing bearing is in slide on the starting block, the starting block begins to revolve, simultaneously passes through link assembly drives door cutter arm subassembly outwards opens, the hook end of latch hook upwards rotates under the effect of balancing weight and keeps the locking state, makes the contact of switch contact switch socket realizes locking, and the car normally closes the door.

In a specific embodiment, when the car is in an unlocking area and a door is taken off from the car, the car door is moved to the door opening direction by external force until the right door knife arm touches the landing door ball, the right door knife arm moves outwards under the resistance of the landing door ball, so that the first connecting block and the second connecting block rotate clockwise and drive the left door knife arm and the right door knife arm to rotate, and then the connecting rod assembly drives the lock hook to rotate downwards, so that the car door lock hook is unlocked and the switch contact is driven to be separated from the switch socket, and unlocking is realized;

when the car is in the regional door of taking off from the car of unblanking, earlier with the triangle key with the door unblock of layer, make layer door is to the direction motion of opening the door, move extremely left door sword arm touches layer croquet, left door sword arm is in outside motion under the resistance of layer croquet makes first connecting block with the second connecting block is along clockwise rotation and drive left door sword arm with right door sword arm rotates, the rethread link assembly drives the latch hook rotates downwards, unties sedan-chair door latch hook, and drives the switch contact breaks away from switch socket realizes the unblock.

In a specific embodiment, when the car is in a non-unlocking area, when the motor opens the door by mistake, the motor acts to enable the synchronous belt to move towards the door opening direction, the synchronous belt drives the starting block to rotate, the first connecting block rotates anticlockwise, the left door knife arm and the right door knife arm continue to clamp inwards, the connecting rod assembly is not stressed by the action of right upper extrusion force, the connecting rod assembly keeps a free state at the moment, and the lock hook is in a locking state and still keeps a normal door closing locking state with a switch bracket integrated on a bottom plate of the door machine;

the car is in a non-unlocking area, when a door is taken off in the car, the motor synchronous belt does not act, the starting block and the linkage plate also keep still, the door hanging plate drives the door knife bottom plate to move towards the door opening direction when the door is taken off, the whole car door lock device integrally moves towards the door opening direction until the lock hook hooks the switch fixing plate fixed on the door machine, the door knife arm component does not contact with a landing door ball, the door knife arm component does not act, and the door hanging plate continues to move towards the door opening direction until the hook hooks the hook plate fixed on the door machine;

the car is in the non-region of unblanking, when the car is opened the door outward, earlier with the triangle key will layer door unblock makes layer door moves to opening the door direction and opens completely, manual rescue rope that draws downwards this moment, rescue rope fixed part downstream drives urgent unblock piece clockwise gyration, promptly separate behind the pulling force that the locking plate overcome urgent unblock extension spring, make the hook end of latch hook rotates downwards, realizes the unblock of sedan-chair door, manual taking off again the sedan-chair door, release behind the rescue rope, urgent unblock extension spring release pressure makes urgent unblock piece anticlockwise gyration, the hook end of latch hook passes through the automatic upwards resetting of self gravity and the counter weight of latch hook keeps the locking state.

Compared with the prior art, the invention has the following beneficial effects:

the elevator car door lock device and the control method thereof provided by the invention can ensure that the mechanical part locking and the electrical loop safety verification are simultaneously ensured, so that the car door lock has a simple structure, is convenient to install and debug, reduces the maintenance difficulty and the cost of an elevator, improves the reliability and the safety of the car door lock, and the door opening and closing under various conditions becomes simpler, more reliable and safer through the linked door opening and closing mode.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a front view of a first construction of an elevator door lock assembly in accordance with an embodiment;

figure 2 is a rear view of a first configuration of an elevator door lock assembly in accordance with an embodiment;

FIG. 3 is a front view of a second embodiment of the door latch assembly of the present invention with the door normally open;

FIG. 4 is a front view of a third construction of the car door lock device in an unlocking zone for opening the car door;

FIG. 5 is a front view of a fourth construction of the car door lock device in an embodiment in which the motor in the non-unlocked area is mistakenly opened.

Description of the main element symbols:

1-a door vane bottom plate; 2-a gate knife arm assembly; 3-a latch hook; 4-a linkage assembly; 5-starting block; 6-a verification switch; 7-a swing link assembly; 8-an elastic component; 9-a switch contact; 10-a switch socket; 11-arc chute; 12-limiting and slotting; 13-a first link; 14-a second link; 15-a third link; 16-a rotating member; 17-a swing rod; 19-a rocker spring; 20-limit bearing; 21-rolling bearings; 22-a curve plate; 23-a limiting groove; 24-left gate knife arm; 25-right gate knife arm; 26-a first connecting block; 27-a second connection block; 28-starting block tension spring; 29-support column; 30-emergency unlocking plate; 31-emergency unlocking tension spring.

Detailed Description

Examples

As shown in fig. 1 to 5, the present embodiment provides an elevator car door lock device including:

door sword bottom plate 1, door sword arm component 2, latch hook 3, link assembly 4, start block 5, verify switch 6, pendulum rod subassembly 7 and elastic component 8, door sword arm component 2 and latch hook 3 all movably set up on door sword bottom plate 1.

One end of the connecting rod component 4 is fixedly arranged on the lock hook 3, and is rotatably connected to the starting block 5 and the door knife arm component 2 to drive the door knife arm component 2 to swing. The latch hook 3 includes a tail end and a hook end with a tip portion facing upward, a counterweight (not shown in the figure) is arranged on the tail end, and the counterweight makes the weight of the tail end of the latch hook 3 larger than the weight of the hook end of the latch hook 3, so that when the door is closed, the hook end of the latch hook 3 is driven to rotate upward, and the switch contact 9 can contact the switch socket 10.

The verification switch 6 comprises a switch contact 9 and a switch receptacle 10, the switch contact 9 being arranged on the latch hook 3, the switch receptacle 10 being arranged on an external base located above the latch hook 3.

Specifically, the latch hook 3 can rotate around the door vane bottom plate 1 and is fixed with a limiting rubber (not shown in the figure) at the lower left side, and the counterweight block enables the weight of the tail end of the latch hook 3 to be larger than that of the hook end of the latch hook 3, and under the action of gravity, the counterweight block is kept downward. The hook end of the latch hook 3 is fixed with a switch contact 9 which forms electrical interlock with a switch fixed on the bottom plate of the gantry crane. The hook end of the latch hook 3 keeps an upward state under the action of the tail end balancing weight, so that the switch contact 9 can contact the switch socket 10 to keep a locking state.

Pendulum rod subassembly 7 and elastic component 8 all set up on door sword bottom plate 1, and the piece 5 is started to 7 joints of pendulum rod subassembly, and start piece 5 is used for spacing pendulum rod subassembly 7, and elastic component 8 elastic connection is in start piece 5 for provide the elastic force to start piece 5.

Specifically, an arc chute 11 is arranged on the door knife bottom plate 1, the starting block 5 is movably arranged in the arc chute 11, and the swing rod assembly 7 is clamped with the starting block 5 and used for limiting the left-right swing of the starting block 5. The elastic component 8 is elastically connected to the starting block 5 and is used for providing elastic force to the starting block 5 so that the starting block 5 is always kept stressed towards the door opening direction.

The upper end of the door vane bottom plate 1 further comprises a limiting open slot 12, one end of the starting block 5 is movably arranged in the limiting open slot 12, and the limiting open slot 12 is used for limiting the left-right swing of the starting block 5. The starting block 5 is provided with a limiting ring (not shown in the figure), and the limiting ring keeps the starting block 5 always moving in a limiting notch 12 arranged at the upper end of the door vane bottom plate 1.

The starting block 5 is rotatably arranged on the door vane bottom plate 1 and is also used for pushing the door vane arm component 2 to be folded inwards through the connecting rod component 4 when the lock hook 3 is unlocked and driving the lock hook 3 to rotate downwards, so that the switch contact 9 is separated from the switch socket 10, and unlocking is realized. The starting block 5 is also used for enabling the swing rod assembly 7 to move on the starting block 5 through the external force action when the locking hook 3 is locked, so that the starting block 5 rotates, the door knife arm assembly 2 is pushed to be outwards opened through the connecting rod assembly 4, meanwhile, the hook end of the locking hook 3 is driven to upwards rotate through the action of the balancing weight at the tail end of the locking hook 3, the switch contact 9 is made to contact with the switch socket 10, and locking is achieved.

Specifically, the starting block 5, the latch hook 3, the swing link assembly 7 and the following emergency unlocking device are all located on a first surface of the door vane base plate 1, and the door vane arm assembly 2 is located on a second surface of the door vane base plate 1. From the rear view of sedan-chair door lock, that is from the first face of door vane bottom plate 1, pendulum rod subassembly 7 sets up the upper left side at link assembly 4 and is located the left side of actuating block 5 simultaneously, and link assembly 4 is located the upper right side of latch hook 3 and is located the right side of actuating block 5 simultaneously. In the present embodiment, all directions, such as up, down, left, and right, are viewed from the rear view of the car door lock, that is, from the first surface of the vane bottom plate 1.

Specifically, this embodiment enables mechanical part locking and electric circuit safety verification to guarantee simultaneously, makes sedan-chair door lock simple structure, and installation and debugging are convenient, reduces the cost of the maintenance degree of difficulty and elevator, has improved sedan-chair door lock's reliability and security, and the switch door of the multiple condition becomes simpler, more reliable and safety through the switch door mode of linkage like this.

In this embodiment, the link assembly 4 includes a first link 13, a second link 14, a third link 15 and a rotating member 16, and the first end of the first link 13, the first end of the second link 14 and the first end of the third link 15 are coaxially sleeved on the rotating member 16.

Specifically, the first end of the first link 13 is sleeved at the first end of the rotating member 16, the first end of the third link 15 is sleeved at the second end of the rotating member 16, and the first end of the second link 14 is sleeved at the middle of the rotating member 16 and is located between the first link 13 and the third link 15.

The second end of the first connecting rod 13 is arranged on the lock hook 3, the second end of the second connecting rod 14 is rotatably connected to the door knife arm assembly 2, the second end of the third connecting rod 15 is rotatably connected to the starting block 5, and a linkage assembly is formed among the first connecting rod 13, the second connecting rod 14 and the third connecting rod 15.

In this embodiment, the swing link assembly 7 includes a swing link 17 and a swing link spring 19, the swing link 17 is rotatably disposed on the door vane base plate 1, the swing link 17 is elastically connected to the door vane base plate 1 through the swing link spring 19, one end of the swing link 17 is provided with a limit bearing 20, and the other end is provided with a rolling bearing 21.

The limiting bearing 20 is used for clamping the starting block 5, and the rolling bearing 21 is used for contacting a curve plate on the bottom plate of the external door machine to enable the swing rod 17 to rotate and drive the limiting bearing 20 to move on the starting block 5; the rolling bearing 21 is also used for moving downwards through the swing rod spring 19 to be separated from the curve plate, so that the swing rod 17 rotates and drives the limiting bearing 20 to be clamped with the starting block 5. It should be noted that the limit bearing 20 is in contact with the actuating block 5 at all times.

In this embodiment, the starting block 5 includes a limiting groove 23, and the limiting groove 23 is used for accommodating the limiting bearing 20 on the swing rod 17 to limit the swing rod 17. The starting block 5 can rotate around the door vane bottom plate 1, the limiting groove 23 is located on the left side of the starting block 5, and the limiting groove 23 is preferably an arc groove. The starting block 5 further comprises a limiting curved surface, the limiting curved surface is located on the left side of the starting block 5 and communicated with the limiting groove 23, the limiting bearing 20 is constantly in contact with the limiting curved surface, and when the swing rod 17 is separated from the limiting groove 23, the swing rod 17 moves on the limiting curved surface of the starting block 5.

In this embodiment, the door vane arm assembly 2 includes a left door vane arm 24, a right door vane arm 25, a first connecting block 26 and a second connecting block 27, the middle part of the first connecting block 26 is hinged to the door vane bottom plate 1, and the starting block 5 is connected to the first connecting block 26 through the connecting rod assembly 4 so as to drive the first connecting block 26 to rotate under the external force driving. The left door knife arm 24, the first connecting block 26, the right door knife arm 25 and the second connecting block 27 are sequentially hinged to form a parallelogram structure, so that the starting block 5 can finally drive the left door knife arm 24 and the right door knife arm 25 to be outwards opened or inwards clamped.

Specifically, the left vane arm 24 and the right vane arm 25 can be opened outwards or clamped inwards as the first connecting block 26 and the second connecting block 27 rotate.

Specifically, the starting block 5 is connected to the second end of the third connecting rod 15, the first end of the third connecting rod 15 is sleeved at the second end of the rotating member 16, the first end of the second connecting rod 14 is sleeved in the middle of the rotating member 16, the second end of the second connecting rod 14 is connected to the left door knife arm 24, the starting block 5 can finally drive the left door knife arm 24 to move through the third connecting rod 15, the rotating member 16 and the second connecting rod 14, and the left door knife arm 24 and the right door knife arm 25 are driven to be outwardly opened or inwardly clamped through a parallelogram structure formed among the left door knife arm 24, the first connecting block 26, the right door knife arm 25 and the second connecting block 27.

In this embodiment, still include emergency unlocking device, emergency unlocking device includes emergency unlocking piece 30 and emergency unlocking extension spring 31, and emergency unlocking piece 30 rotationally sets up on door sword bottom plate 1, and the one end elastic connection of emergency unlocking extension spring 31 is in emergency unlocking piece 30, and the other end is connected in door sword bottom plate 1.

The emergency unlocking sheet 30 is provided with a fixing part for fixing an external rescue rope, so that the rescue rope can drive the emergency unlocking sheet 30 to rotate clockwise and press down the hook end of the lock hook 3, and the emergency unlocking tension spring 31 accumulates potential energy. When the rescue rope is released, the emergency unlocking tension spring 31 releases potential energy, so that the emergency unlocking sheet 30 rotates anticlockwise and is separated from the hook end of the locking hook 3. Specifically, the emergency unlocking sheet 30 is transversely disposed on the bottom plate of the door vane, and the fixing portion for fixing the external rescue rope on the emergency unlocking sheet 30 may be a through hole or a pillar.

In this embodiment, elastic component 8 includes starting block extension spring 28 and support column 29, and starting block extension spring 28's one end passes through support column 29 and door sword bottom plate 1 fixed connection, and other end fixed connection is in starting block 5 for provide the elastic force to starting block 5, drive starting block 5 along the one end removal that is close to support column 29, make starting block 5 keep constantly to opening the door direction atress.

In this embodiment, the switch socket 10 includes a slot with a downward opening, and the switch contact 9 includes a pin facing upward and engaged with the slot.

A control method using the elevator car door lock device is shown in figures 2-3, when a car is located in an unlocking area and receives a door opening command, the starting block 5 drives the door knife arm assembly 2 to swing through the connecting rod assembly 4 under the action of external force, so that the door knife arm assembly 2 is folded inwards to clamp a landing door ball, a landing door lock is unlocked, meanwhile, the hook end of the lock hook 3 rotates downwards through the connecting rod assembly 4, the switch contact 9 is separated from the switch socket 10, unlocking is achieved, and the car normally opens the door.

Specifically, when the car was in the region of unblanking and received the instruction of opening the door, be provided with the actuating lever on the starting block 5, export through the motor and make the hold-in range drive the actuating lever and remove to make starting block 5 swing. The starting rod moves towards the door opening direction under the action of external motor force, the left door knife arm 24 is driven to swing through the third connecting rod 15, the rotating piece 16 and the second connecting rod 14, and the left door knife arm 24 and the right door knife arm 25 are driven to inwards draw in to clamp a floor door ball through a parallelogram structure formed among the left door knife arm 24, the first connecting block 26, the right door knife arm 25 and the second connecting block 27, so that a floor door lock is unlocked. Meanwhile, the first connecting rod 13 bears the right upper extrusion force and acts to enable the lock hook 3 to rotate, the hook end of the lock hook 3 rotates downwards to unlock the car door lock hook 3, the switch contact 9 is separated from the switch socket 10, unlocking is achieved, and the car normally opens the door.

As shown in fig. 1, when the car is in the unlocking area and receives a door closing command, the rolling bearing 21 on the swing rod 17 contacts a curve plate on the bottom plate of the external door machine, so that the swing rod 17 rotates and drives the limiting bearing 20 to break away from the limiting groove 23 on the starting block 5, the starting block 5 starts to rotate, and simultaneously the connecting rod assembly 4 drives the door knife arm assembly 2 to swing, so that the door knife arm assembly 2 opens outwards, and simultaneously the hook end of the locking hook 3 is driven to rotate upwards under the action of the balancing weight, so that the switch contact 9 contacts the switch socket 10, locking is realized, and the car is normally closed.

Specifically, when the car is in an unlocking area and receives a door closing instruction, the starting rod moves towards the door closing direction under the action of an external motor force, the starting block 5 pushes the swing rod 17 to rotate under the action of the external motor force, the rolling bearing 21 on the swing rod 17 contacts the curve plate 22 on the bottom plate of the external door machine to enable the swing rod 17 to rotate, the limiting bearing 20 on the swing rod 17 is separated from the limiting groove 23 on the starting block 5, the starting block 5 starts to rotate, the left door knife arm 24 is driven to swing through the third connecting rod 15, the rotating part 16 and the second connecting rod 14, the left door knife arm 24 and the right door knife arm 25 are driven to open outwards through a parallelogram structure formed among the left door knife arm 24, the first connecting block 26, the right door knife arm 25 and the second connecting block 27, at the moment, the first connecting rod 13 is in a free state, and under the action of the counterweight block arranged at the tail end of the lock hook 3, the hook end of the lock hook 3 rotates upwards and is in a locked state, the switch contact 9 is contacted with the switch socket 10 to realize locking, and the car is normally closed.

In this embodiment, as shown in fig. 2 to 3, when the car is in the unlocking area and the door is taken off from the car, the car door is moved to the door opening direction by an external force until the right door knife arm 25 touches the landing door ball, the right door knife arm 25 moves outwards under the resistance of the landing door ball, so that the first connecting block 26 and the second connecting block 27 rotate clockwise and drive the left door knife arm 24 and the right door knife arm 25 to rotate, and then the connecting rod assembly 4 drives the latch hook 3 to rotate downwards, so as to unlock the car door latch hook 3, and drive the switch contact 9 to disengage from the switch socket 10, thereby achieving unlocking.

Specifically, when the car is in the region of unblanking and takes off the door from the car, move the sedan-chair door to right door sword arm 25 and touch layer door ball to opening the door direction through external force, right door sword arm 25 outwards moves under the resistance of layer door ball, make first connecting block 26 and second connecting block 27 clockwise rotate, and drive left door sword arm 24 and right door sword arm 25 and rotate, through third connecting rod 15, rotate 16 and second connecting rod 14's effect, make first connecting rod 13 receive upper right extrusion force and effect, drive latch hook 3 and rotate downwards, untie sedan-chair door latch hook 3, and drive switch contact 9 and break away from switch socket 10, realize the unblock.

As shown in fig. 4, when the car is in the unlocking area and the door is taken off from the outside of the car, the landing door is unlocked by using a triangular key firstly, the landing door moves towards the door opening direction, the landing door moves to the extent that the left door knife arm 24 touches the landing door ball, the left door knife arm 24 moves outwards under the resistance of the landing door ball, the first connecting block 26 and the second connecting block 27 rotate clockwise, the left door knife arm 24 and the right door knife arm 25 are driven to rotate, the car door lock hook 3 is unlocked by driving the lock hook 3 to rotate downwards through the connecting rod assembly 4, the switch contact 9 is driven to be separated from the switch socket 10, and unlocking is realized.

Specifically, under the action of the third connecting rod 15, the rotating member 16 and the second connecting rod 14, the first connecting rod 13 is subjected to right-upward extrusion force and acts to drive the latch hook 3 to rotate downward, unlock the car door latch hook 3, and drive the switch contact 9 to be separated from the switch socket 10, so that unlocking is realized.

In this embodiment, as shown in fig. 5, the car is in the non-unlocking area, when the motor opens the door by mistake, the motor moves to make the synchronous belt move towards the door opening direction, the synchronous belt drives the starting block 5 to rotate, so that the first connecting block 26 rotates anticlockwise, because there is no layer door ball in the middle of this time, the left door knife arm 24 and the right door knife arm 25 continue to clamp inwards, the connecting rod assembly 4 does not receive the effect of right upper extrusion force, at this time, the connecting rod assembly 4 keeps the free state, the latch hook 3 is still in the locking state, and still keeps the normal door closing locking state with the switch bracket integrated on the bottom plate of the door machine, the distance between the latch hook 3 and the hook plate in the normal door closing state is less than 50mm, so when the car door is opened by mistake, the door opening distance meets the national standard requirement.

Specifically, the left door blade arm 24 and the right door blade arm 25 continue to be clamped inward, the first link 13 is not subjected to the force of the upward right pressing force, at this time, the first link 13 maintains a free state, and the latch hook 3 is still in a locked state.

The car is in the region of unblanking, and when taking off the door in the car, the motor hold-in range is not moved, and start block 5 and linkage plate also remain motionless, and door link plate drives door sword bottom plate 1 and moves to the direction of opening the door when taking off the door, and whole sedan-chair door lock device is whole to the direction of opening the door and move to latch hook 3 and catch on the switch fixed plate of fixing on the door machine. Because in the non-region of unblanking, door tool arm subassembly 2 can't contact layer door ball, so door tool arm subassembly 2 does not move, and the door link plate continues to move to the hook and catches on the hook plate of fixing on the door machine to the direction of opening the door, and the interval of opening the door is less than 50mm, satisfies the national standard requirement.

The lift car is in the non-unlocking area, and when the lift car is opened outwards, the landing door is unlocked by the triangular key firstly, so that the landing door moves to the opening direction until the landing door is completely opened. At this time, the rescue rope (not shown in the figure) is manually pulled downwards, the rescue rope fixing part moves downwards to drive the emergency unlocking sheet 30 to rotate clockwise, the emergency unlocking shifting sheet overcomes the tension of the emergency unlocking tension spring 31, the lock hook 3 rotates, the hook end of the lock hook 3 rotates downwards to unlock the car door, and then the car door is manually opened. After the rescue rope is released, the emergency unlocking tension spring 31 releases pressure to enable the emergency unlocking sheet 30 to rotate anticlockwise, the lock hook 3 automatically resets through the self gravity of the lock hook and the counterweight, the hook end of the lock hook 3 rotates upwards, and the locking state is kept.

Compared with the prior art, the elevator car door lock device and the control method thereof provided by the embodiment can ensure that the mechanical part is locked and the safety of the electric circuit is verified simultaneously, so that the car door lock has a simple structure, is convenient to install and debug, reduces the maintenance difficulty and the cost of an elevator, improves the reliability and the safety of the car door lock, and the door opening and closing modes of various conditions are simpler, more reliable and safer through linkage.

The mode that can set up downwards through the opening direction of slot avoids piling up of dust in the switch slot, reduces the latch hook to the impact of switch socket, avoids switch socket to be damaged by the latch hook, has further improved the practicality of device.

Those skilled in the art will appreciate that the figures are merely schematic representations of one preferred implementation scenario and that the blocks or flow diagrams in the figures are not necessarily required to practice the present invention.

Those skilled in the art will appreciate that the modules in the devices in the implementation scenario may be distributed in the devices in the implementation scenario according to the description of the implementation scenario, or may be located in one or more devices different from the present implementation scenario with corresponding changes. The modules of the implementation scenario may be combined into one module, or may be further split into a plurality of sub-modules.

The above-mentioned invention numbers are merely for description and do not represent the merits of the implementation scenarios.

The above disclosure is only a few specific implementation scenarios of the present invention, however, the present invention is not limited thereto, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.

Claims

1. An elevator car door lock apparatus, comprising:

2. The elevator car door lock device according to claim 1, wherein:

the swing rod assembly is rotatably arranged on the door knife base plate and is used for clamping the starting block;

3. The elevator car door lock device according to claim 2, wherein:

the swing rod assembly comprises a swing rod and a swing rod spring, the swing rod is rotatably arranged on the door knife bottom plate and is elastically connected to the door knife bottom plate through the swing rod spring, one end of the swing rod is provided with a limiting bearing, and the other end of the swing rod is provided with a rolling bearing;

4. The elevator car door lock device according to claim 2, wherein:

the connecting rod assembly comprises a first connecting rod, a second connecting rod, a third connecting rod and a rotating part;

5. The elevator car door lock device according to claim 2, wherein:

also includes an elastic component;

6. The elevator car door lock device according to claim 1, wherein:

the door knife arm component comprises a left door knife arm, a right door knife arm, a first connecting block and a second connecting block;

7. The elevator car door lock device according to claim 1, wherein:

the emergency unlocking device comprises an emergency unlocking plate and an emergency unlocking tension spring, the emergency unlocking plate is rotatably arranged on the door knife bottom plate, one end of the emergency unlocking tension spring is elastically connected to the emergency unlocking plate, and the other end of the emergency unlocking tension spring is connected to the door knife bottom plate;

8. A control method using the elevator car door lock device according to any one of claims 3 to 7, characterized in that:

9. The control method of an elevator car door lock device according to claim 8, characterized in that:

when the car is in an unlocking area and a door is taken off from the car, the car door is moved to the door opening direction by external force until the right door knife arm touches the layer door ball, the right door knife arm moves outwards under the resistance of the layer door ball, so that the first connecting block and the second connecting block rotate clockwise and drive the left door knife arm and the right door knife arm to rotate, the connecting rod assembly drives the lock hook to rotate downwards, the car door lock hook is unlocked, the switch contact is driven to be separated from the switch socket, and unlocking is realized;

10. The method of controlling an elevator car door lock device according to claim 9, wherein:

when the car is in a non-unlocking area, when the motor mistakenly opens the door, the motor acts to enable the synchronous belt to move towards the door opening direction, the synchronous belt drives the starting block to rotate, the first connecting block rotates anticlockwise, the left door knife arm and the right door knife arm continue to clamp inwards, the connecting rod assembly is not stressed by the action of right upper extrusion force, at the moment, the connecting rod assembly keeps a free state, the lock hook is in a locking state, and the lock hook and a switch bracket integrated on a bottom plate of the door machine still keep a normal door closing locking state;