CN113415703B - Elevator connecting rod car door lock device and control method thereof - Google Patents

Abstract

The invention provides an elevator connecting rod car door lock device and a control method thereof, wherein the device comprises a door knife bottom plate, a door knife arm assembly, a lock hook, a connecting rod assembly, a lock hook connecting rod, a starting block, a verification switch and a swing rod assembly, wherein the starting block is used for driving the door knife arm assembly to retract inwards, so that the connecting rod assembly drives a hook end of the lock hook to rotate upwards through the lock hook connecting rod, a car door lock hook is unlocked, a switch contact is driven to move on the door knife bottom plate to be separated from a switch socket, and when the swing rod assembly moves on the starting block, the starting block is used for driving the door knife arm assembly to open outwards through the connecting rod assembly, so that the hook end of the lock hook rotates downwards through potential energy accumulated by an elastic piece, the car door lock is locked, and the switch contact is driven to move on the door knife bottom plate to be contacted with the switch socket. Compared with the prior art, the mechanical part and the electrical part of the elevator door lock can be verified at the same time, the reliability of the elevator door lock can be improved, the impact of the lock hook on the switch is reduced, and the switch door of the elevator is simplified and reliable through the linkage structure.

Description

Elevator connecting rod car door lock device and control method thereof

Technical Field

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

Background

At present, the elevator is used as the most frequent vertical transportation means for modern people, not only solves the daily life demands of people, but also plays a very important role in promoting the development of human society, and the safety of the elevator has direct influence on the life and production of people.

In the traditional elevator connecting rod car door lock device at present, most of car door lock mechanical parts and electric parts are separated, the safety of the elevator car door lock is ensured by mechanical parts and electric parts, the mechanical parts realize the door opening of a door system correspondingly, the electric parts mainly realize the control of a door lock loop, and according to the car door lock arranged by the conventional method, not only is an additional device required to be added, the car door lock structure is complicated, the maintenance difficulty and the elevator cost are increased, but also the mechanical and electric safety cannot be ensured at the same time, the reliability of the car door lock is reduced, and the accident is difficult to avoid.

The traditional elevator car door lock switch socket is arranged in a positive mode, specifically, a power supply groove on the switch socket faces upwards, and dust is easy to accumulate in the switch groove.

When the elevator is opened and closed under various conditions, specifically, when the elevator car is in an unlocking area, the elevator door is opened and closed and when the elevator car is not in an unlocking area, the traditional elevator car door lock is realized through different modules, the structure is complex, the cost is high, and the safety of the elevator is reduced.

Disclosure of Invention

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

an elevator link door lock device comprising:

the door knife comprises a door knife bottom plate, a door knife arm assembly, a lock hook, a connecting rod assembly, a lock hook connecting rod, a starting block, a verification switch and a swing rod assembly, wherein the door knife arm assembly, the lock hook, the starting block and the swing rod assembly are movably arranged on the door knife bottom plate, the swing rod assembly is clamped with the starting block, one end of the connecting rod assembly is connected with the starting block, the other end of the connecting rod assembly is connected with the door knife arm assembly, and the lock hook connecting rod is arranged on the lock hook and is rotatably connected with the connecting rod assembly;

the verification switch comprises a switch contact and a switch socket, wherein the switch socket is arranged on an external base above the lock hook and is positioned on the side surface of the switch contact, the switch contact is movably arranged on the door knife bottom plate, the lock hook comprises a hook end, a tail end, an upper end and a lower end, the tip of the hook end of the lock hook faces downwards, the upper end of the lock hook is movably arranged on the switch contact in a penetrating manner, and the lower end of the lock hook is elastically connected to the door knife bottom plate through an elastic piece;

the starting block is used for driving the door knife arm assembly to retract inwards through the connecting rod assembly, so that the connecting rod assembly drives the hook end of the lock hook to rotate upwards through the lock hook connecting rod, the car door lock hook is unlocked, and the switch contact is driven to move on the door knife bottom plate to be separated from the switch socket;

when the swing rod assembly moves on the starting block, the starting block is used for driving the door knife arm assembly to open outwards through the connecting rod assembly, so that the hook end of the lock hook rotates downwards through potential energy accumulated by the elastic piece, the car door lock is locked, and the switch contact is driven to move on the door knife bottom plate to contact the switch socket.

In a specific embodiment, the door knife further comprises a movable guide rail and a fixed block, wherein the fixed block is arranged on the door knife bottom plate, and the movable guide rail is movably penetrated on the fixed block;

the switch contact comprises a contact pin and a contact pin mounting seat used for mounting the contact pin, the needle head of the contact pin faces to the side face of the door knife bottom plate, the contact pin mounting seat is fixedly connected to the movable guide rail, a through hole is further formed in the contact pin mounting seat, the upper end of the lock hook comprises a limiting piece, the limiting piece is arranged in the through hole of the contact pin mounting seat in a penetrating mode, and the lock hook can drive the contact pin to contact or separate from the switch socket through the movable guide rail.

In a specific embodiment, the connecting rod assembly comprises a first connecting rod, a second connecting rod and a rotating piece, wherein the first end of the first connecting rod, the first end of the second connecting rod and the locking hook connecting rod are coaxially sleeved on the rotating piece;

the second end of the first connecting rod is rotationally connected with the starting block, the second end of the second connecting rod is rotationally connected with the door knife arm assembly, so that the starting block can drive the door knife arm assembly to open outwards or tighten inwards through the first connecting rod and the second connecting rod, and the lock hook is driven to rotate through the lock hook connecting rod.

In a specific embodiment, 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, one end of the swing rod spring is connected with the door knife bottom plate, the other end of the swing rod spring is connected with the swing rod, one end of the swing rod is provided with a limit bearing, and the other end of the swing rod is provided with a rolling bearing;

the limiting bearing is used for being clamped with the starting block, and the rolling bearing is used for contacting a curve plate on a bottom plate of an external door machine, so that the swing rod rotates and drives the limiting bearing to move on the starting block; the rolling bearing is also used for enabling the swing rod to rotate and driving the limit bearing to be clamped with the starting block through the downward movement of the swing rod spring to be separated from the curve plate.

In a specific embodiment, the door knife further comprises a swing rod limiting piece, wherein the swing rod limiting piece is arranged on the door knife bottom plate;

when the swing rod moves on the starting block, the swing rod limiting piece is used for limiting the swing rod.

In a specific embodiment, the starting block includes a limiting groove, and the limiting groove is used for accommodating a limiting bearing on the swing rod and limiting the swing rod.

In a specific embodiment, the door knife further comprises an emergency unlocking device, wherein the emergency unlocking device comprises an emergency unlocking plate and an emergency unlocking torsion spring, the emergency unlocking plate is rotatably arranged on the door knife bottom plate, and the emergency unlocking torsion spring is rotatably connected with the emergency unlocking plate;

one end of the emergency unlocking plate is provided with a fixing part for fixing an external rescue rope, so that the rescue rope can drive the emergency unlocking plate to rotate clockwise, the emergency unlocking plate can drive the hook end of the lock hook to move upwards, and the emergency unlocking torsion spring accumulates torsion;

when the rescue rope is released, the emergency unlocking torsion spring releases torsion force, so that the emergency unlocking piece rotates anticlockwise and is separated from the lock hook.

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

when the lift car is in an unlocking area and receives a door opening instruction, the starting block rotates towards the door opening direction under the action of external force, the door knife arm assembly is driven by the connecting rod assembly to be inwards folded to clamp a landing door ball, the landing door lock is unlocked, the hook end of the lock hook is driven by the lock hook connecting rod to upwards rotate through the connecting rod assembly, the lift car door lock hook is unlocked, the switch contact is driven to move to be separated from the switch socket in the door opening direction on the door knife bottom plate, unlocking is achieved, and the lift car is normally opened;

when the lift car is in an unlocking area and receives a door closing instruction, under the action of external force, the rolling bearing on the swinging rod contacts a curve plate fixed on a bottom plate of the door machine, so that the swinging rod rotates and drives the limiting bearing to move on the starting block, the starting block starts to rotate and drives the door knife arm assembly to open outwards through the connecting rod assembly, the hook end of the lock hook rotates downwards through gravity and potential energy accumulated by the elastic piece, and drives the switch contact to move to contact with the switch socket in the door closing direction on the door knife bottom plate, locking is achieved, and the lift car is normally closed.

In a specific embodiment, when the car is in an unlocking area and the door is pulled out 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 ball, the right door knife arm expands outwards under the resistance of the landing 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 lock hook connecting rod drives the hook end of the lock hook to rotate upwards through the connecting rod assembly, the car door lock hook is unlocked, and the switch contact is driven to move to be separated from the switch socket on the door knife bottom plate in the door opening direction, so that unlocking is realized, and the car door is opened;

when the elevator car is in an unlocking area and the elevator car is used for taking off the elevator car, firstly, a triangular key is used for unlocking the elevator car, so that the elevator car moves towards the opening direction until the left door knife arm touches the elevator car door ball, the left door knife arm expands outwards under the resistance of the elevator car door ball, 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 lock hook connecting rod drives the hook end of the lock hook to rotate upwards through the connecting rod assembly, the elevator car door lock hook is unlocked, the switch contact is driven to move towards the opening direction on the door knife bottom plate to be separated from the switch socket, unlocking is realized, and the elevator car is opened.

In a specific embodiment, when the car is in a non-unlocking area and the motor is in a false door, the motor acts to drive the starting block to rotate so as to enable the first connecting block to rotate anticlockwise, the left door knife arm and the right door knife arm continue to clamp inwards, at the moment, the hook end of the lock hook keeps a downward state through gravity and potential energy accumulated by the elastic piece, so that the switch contact is kept in contact with the switch socket and is kept in a locking state;

when the car is in a non-unlocking area and the door is taken off in the car, the motor does not act, the starting block and the linkage plate also remain motionless, the door hanging plate drives the door knife bottom plate to move towards the door opening direction during door taking, the whole connecting rod 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 left door knife arm and the right door knife arm are not contacted with the landing ball, the left door knife arm and the right door knife arm do 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;

when the car is in a non-unlocking area, the triangular key is firstly used for unlocking the landing door, so that the landing door moves to be completely opened in the door opening direction, the rescue rope is manually pulled downwards, the rescue rope fixing part moves downwards to drive the emergency unlocking plate to rotate in the clockwise direction, after the emergency unlocking plate overcomes the torsion force of the emergency unlocking torsion spring, one end of the emergency unlocking plate pushes the locking hook to enable the locking hook to rotate in the anticlockwise direction, the unlocking of the car door is realized, after the car door is manually pulled open, the rescue rope is released, the torsion force is released by the emergency unlocking torsion spring to enable the emergency unlocking plate to rotate in the anticlockwise direction, and the hook end of the locking hook automatically resets through the potential energy accumulated by the elastic piece to keep the locking state.

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

the elevator connecting rod car door lock device and the control method thereof provided by the invention can ensure the locking of the mechanical part and the safety verification of the electric loop, ensure that the car door lock is simple in structure, convenient to install and debug, reduce the maintenance difficulty and the elevator cost, improve the reliability and safety of the car door lock, and enable the opening and closing door of various situations to be simpler, more reliable and safer in a linkage opening and closing door mode.

In order to make the above objects, features and advantages of the present invention more 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 that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a front view of a first construction of an elevator link door lock device in an embodiment;

fig. 2 is a first structural rear view of an elevator link car door lock device in an embodiment;

fig. 3 is a front view of a second structure of the link car door lock device in the case of normal door opening in the embodiment;

fig. 4 is a front view of a third structure of the link door lock device when the door is taken off outside the car in the unlocking area in the embodiment;

fig. 5 is a front view of a fourth configuration of the link car door lock device when the motor is erroneously opened in the non-unlock region in the embodiment.

Description of main reference numerals:

1-a door knife bottom plate; 2-a tool arm assembly; 3-latch hooks; 4-a connecting rod assembly; 5-a latch hook connecting rod; 6-a start block; 7-a swing rod assembly; 8-switch contacts; 9-switching a socket; 10-an elastic member; 11-a guide rail; 12-fixing blocks; 13-pins; 14-a pin mounting base; 15-limiting pieces; 16-a first link; 17-a second link; 18-a rotating member; 19-swinging rod; 20-a pendulum rod spring; 21-a limit bearing; 22-rolling bearings; 24-a swing rod limiting piece; 25-limit grooves; 26-starting a block tension spring; 27-supporting columns; 28-limiting slotting; 29-left door knife arm; 30-right door knife arm; 31-a first connection block; 32-a second connection block; 33-emergency unlocking tab.

Detailed Description

Examples

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

the door knife bottom plate 1, door knife arm assembly 2, the latch hook 3, link assembly 4, latch hook link 5, start block 6, verification switch and pendulum rod assembly 7, door knife arm assembly 2, latch hook 3, start block 6 and pendulum rod assembly 7 all movably set up on door knife bottom plate 1, start block 6 and latch hook 3 all can rotate around door knife bottom plate 1, be fixed with spacing rubber (not shown in the figure) on the latch hook 3, pendulum rod assembly 7 joint start block 6, start block 6 is connected to link assembly 4 one end, and door knife arm assembly 2 is connected to the other end, and latch hook link 5 sets up on latch hook 3 and rotates to connect in link assembly 4.

Specifically, the starting block 6, the latch hook 3, the latch hook connecting rod 5 and the swing rod assembly 7 are all located on the first surface of the door knife bottom plate 1, and the door knife arm assembly 2 and the following emergency unlocking device are all located on the second surface of the door knife bottom plate 1, and the latch hook connecting rod 5 is fixedly arranged on the latch hook 3. From the rear view of the car door lock, i.e. from the first side of the door knife bottom plate 1, the swing rod assembly 7 is arranged above the left side of the connecting rod assembly 4 and is positioned at the left side of the starting block 6, and the connecting rod assembly 4 is positioned above the right side of the locking hook 3 and is positioned at the right side of the starting block 6. In this embodiment, all directions of up, down, left, right, etc. are seen from the rear view of the car door lock, that is, from the first surface of the door vane base plate 1.

Specifically, the device also comprises a starting rod (not shown in the figure), the starting rod is connected to the starting block 6, an external motor is in transmission connection with the starting rod, and the starting block 6 is driven to rotate through the starting rod.

The verification switch comprises a switch contact 8 and a switch socket 9, wherein the switch socket 9 is arranged on an outer base above the lock hook 3 and is positioned on the left side of the switch contact 8, the switch contact 8 is movably arranged on the door knife bottom plate 1, the lock hook 3 comprises a hook end, a tail end, an upper end and a lower end, the hook end of the lock hook 3 faces downwards, the tail end of the lock hook 3 is rotationally connected to the door knife bottom plate 1, the upper end of the lock hook 3 movably penetrates through the switch contact 8, and the lower end of the lock hook is elastically connected to the door knife bottom plate 1 through an elastic piece 10.

The starting block 6 is used for driving the door knife arm assembly 2 to retract inwards through the connecting rod assembly 4, the connecting rod assembly 4 drives the lock hook connecting rod 5 to swing, the lock hook connecting rod 5 drives the tail end of the lock hook 3 to rotate downwards, the hook end of the lock hook 3 rotates upwards, the car door lock hook 3 is unlocked, and the switch contact 8 is driven to move rightwards on the door knife bottom plate 1 to be separated from the switch socket 9, so that unlocking is realized.

When the swing rod assembly 7 moves on the starting block 6, the starting block 6 is used for driving the door knife arm assembly 2 to open outwards through the connecting rod assembly 4, so that the hook end of the lock hook 3 rotates downwards through self gravity and potential energy accumulated by the elastic piece 10, the car door lock is locked, and the switch contact 8 is driven to move leftwards on the door knife bottom plate 1 to be in contact with the switch socket 9, and locking is achieved.

In particular, the elastic member 10 may be a spring arranged to assist the downward rotation of the hook end of the latch hook 3.

The elevator connecting rod sedan-chair door lock device that this embodiment provided enables mechanical part locking and electrical circuit safety verification to guarantee simultaneously, makes sedan-chair door lock simple structure, and installation and debugging are convenient, reduce the cost of maintenance degree of difficulty and elevator, have improved the reliability and the security of sedan-chair door lock, and the switch door of multiple condition becomes simpler, more reliable and safety through the switch door mode of linkage like this.

In this embodiment, the door knife further comprises a moving guide rail 11 and a fixed block 12, wherein the fixed block 12 is arranged on the door knife bottom plate 1, and the moving guide rail 11 is movably arranged on the fixed block 12 in a penetrating manner. Switch contact 8 includes contact pin 13 and is used for installing contact pin 13's contact pin mount pad 14, contact pin 13's syringe needle is towards the left side, contact pin mount pad 14 fixed connection is in movable rail 11, movable rail 11 can drive contact pin mount pad 14 along controlling the direction and remove, still be provided with waist-shaped through-hole on the contact pin mount pad 14, the upper end of latch hook 3 includes locating part 15, locating part 15 wears to establish in contact pin mount pad 14's waist-shaped through-hole, when latch hook 3 mechanical locking, electrical switch-on, latch hook 3 can drive contact pin 13 through movable rail 11 and contact left switch socket 9, realize the electrical verification function. The latch hook 3 is used for realizing a mechanical locking function, and the switch and the contact jointly function to realize an electric verification function. The spacing element 15 may be a post.

When the movable guide rail 11 drives the pin mounting seat 14 to move leftwards, the pin 13 on the pin mounting seat 14 also moves leftwards along with the pin mounting seat 14 and contacts with the external switch socket 9; when the moving rail 11 drives the pin mounting seat 14 to move rightward, the pin 13 on the pin mounting seat 14 also moves leftward along with the pin mounting seat 14 and is separated from the external switch socket 9.

Specifically, a fixed block 12 is arranged on the door knife bottom plate 1, a linear moving guide rail 11 passes through the middle of the fixed block 12 and is fixed with a pin mounting seat 14, and pins 13 on the pin mounting seat 14 and corresponding electrical switches form electrical interlocking.

Specifically, the switch socket 9 includes a slot, the pin 13 is in plug-in fit with the slot, the opening direction of the slot is toward the right side as viewed from the first face of the door knife bottom plate 1, and the needle of the pin 13 is toward the left side to be in plug-in fit with the slot. The switch socket 9 is arranged on the bottom plate of the door machine, and the switch contact 8 forms electrical interlocking with the switch socket 9 fixed on the bottom plate of the door machine.

In this embodiment, the link assembly 4 includes a first link 16, a second link 17 and a rotating member 18, where the first end of the first link 16, the first end of the second link 17 and the latch hook link 5 are coaxially sleeved on the rotating member 18. The second end of the first connecting rod 16 is rotatably connected to the starting block 6, and the second end of the second connecting rod 17 is rotatably connected to the door knife arm assembly 2, so that the starting block 6 can drive the door knife arm assembly 2 to open outwards or tighten inwards through the first connecting rod 16 and the second connecting rod 17, and drive the lock hook 3 to rotate through the lock hook connecting rod 5.

Specifically, the starting block 6 is located on a first surface of the door knife bottom plate 1, the door knife arm assembly 2 is located on a second surface of the door knife bottom plate 1, the rotating piece 18 is arranged on the door knife bottom plate 1 in a penetrating mode, the first connecting rod 16 is located on the second surface of the door knife bottom plate 1, the second connecting rod 17 is located on the first surface of the door knife bottom plate 1, the first connecting rod 16 is connected to the starting block 6 and the rotating piece 18 in a rotating mode, and the second end of the second connecting rod 17 is connected to the door knife arm assembly 2 in a rotating mode.

On the rotating member 18, a first end of the second connecting rod 17 is located between a first end of the first connecting rod 16 and the latch hook connecting rod 5, one end of the latch hook connecting rod 5 is fixedly arranged on the latch hook 3, and the other end is sleeved on the rotating member 18.

In this embodiment, the swing link assembly 7 includes a swing link 19 and a swing link spring 20, the swing link 19 is rotatably disposed on the door knife bottom plate 1, one end of the swing link spring 20 is connected to the door knife bottom plate 1, the other end is connected to the swing link 19, the swing link 19 is elastically connected to the door knife bottom plate 1 through the swing link spring 20, one end of the swing link 19 is provided with a limit bearing 21, and the other end is provided with a rolling bearing 22.

The limiting bearing 21 is used for clamping the starting block 6, and the rolling bearing 22 is used for contacting a curve plate on the bottom plate of the external door machine, so that the swing rod 19 rotates and drives the limiting bearing 21 to move on the starting block 6; the rolling bearing 22 is also used for enabling the swing rod 19 to rotate and driving the limit bearing 21 to be clamped with the starting block 6 through the downward movement of the swing rod spring 20 to be separated from the curve plate. The limit bearing 21 is in contact with the start block 6 at all times.

In this embodiment, the door knife further includes a swing link limiter 24, where the swing link limiter 24 is disposed on the door knife bottom plate 1, and when the swing link 19 moves on the starting block 6, the swing link limiter 24 is used to limit the swing link 19.

In this embodiment, the starting block 6 includes a limiting groove 25, and the limiting groove 25 is used for accommodating a limiting bearing 21 on the swing rod 19 to limit the swing rod 19. Specifically, the starting block 6 can rotate around the door knife bottom plate 1, the limiting groove 25 is located on the left side of the starting block 6, and the limiting groove 25 is preferably an arc groove. The starting block 6 further comprises a limiting curved surface, the limiting curved surface is positioned on the left side of the starting block 6 and is communicated with the limiting groove 25, the limiting bearing 21 is in contact with the limiting curved surface at any time, and when the swing rod 19 is separated from the limiting groove 25, the swing rod 19 moves on the limiting curved surface of the starting block 6.

In this embodiment, the door knife further comprises an elastic component, and the elastic component is disposed on the door knife bottom plate 1 and is elastically connected to the starting block 6, so as to provide an elastic force for the starting block 6, so that the starting block 6 can keep being stressed in the door opening direction.

The elastic component includes start block extension spring 26 and support column 27, and the one end of start block extension spring 26 passes through support column 27 and AND gate sword bottom plate 1 fixed connection, and the other end passes through spacing collar fixed connection in start block 6 for provide elastic force to start block 6, drive start block 6 and remove along the one end that is close to support column 27.

Specifically, the upper side of the door knife bottom plate 1 is provided with a starting block 6 which swings and limits left and right, and the starting block 6 swings and limits left and right and is positioned above the door knife bottom plate 1, specifically a limiting slot 28 which limits left and right of the starting block 6. The starting block 6 is forced to the door opening direction at any time through the starting block tension spring 26, and the limiting ring is arranged on the starting block 6, so that the limiting ring keeps the starting block 6 to act in the limiting groove 28 arranged at the upper end of the door knife bottom plate 1 all the time.

In this embodiment, the door knife arm assembly 2 includes a left door knife arm 29, a right door knife arm 30, a first connecting block 31 and a second connecting block 32, the middle part of the first connecting block 31 is hinged to the door knife bottom plate 1, and the starting block 6 is rotationally connected with the first connecting block 31 through the connecting rod assembly 4, so as to drive the first connecting block 31 to rotate under the driving of external force. The left door knife arm 29, the first connecting block 31, the right door knife arm 30 and the second connecting block 32 are sequentially hinged to form a parallelogram structure, so that the starting block 6 can drive the left door knife arm 29 and the right door knife arm 30 to be outwards opened or inwards clamped.

The left door knife arm 29 and the right door knife arm 30 are respectively connected with the door knife bottom plate 1 through the first connecting block 31 and the second connecting block 32 and can freely rotate, the upper end of the left door knife arm 29 is rotationally connected with the left end of the first connecting block 31, the lower end of the left door knife arm 29 is rotationally connected with the left end of the second connecting block 32, the upper end of the right door knife arm 30 is rotationally connected with the right end of the first connecting block 31, the lower end of the right door knife arm 30 is rotationally connected with the right end of the second connecting block 32, the left door knife arm 29, the first connecting block 31, the right door knife arm 30 and the second connecting block 32 are sequentially hinged to form a parallelogram structure, and the left door knife arm 29 and the right door knife arm 30 can be outwards opened and inwards clamped along with the rotation of the first connecting block 31 and the second connecting block 32.

In this embodiment, the emergency unlocking device further comprises an emergency unlocking plate 33 and an emergency unlocking torsion spring (not shown in the figure), wherein the emergency unlocking plate 33 is rotatably arranged on the door knife bottom plate 1, and the emergency unlocking torsion spring is rotatably connected to the emergency unlocking plate 33.

One end of the emergency unlocking plate 33 is provided with a fixing part for fixing an external rescue rope, so that the rescue rope can drive the emergency unlocking plate 33 to rotate clockwise, and the emergency unlocking plate 33 drives the hook end of the latch hook 3 to move upwards, and the emergency unlocking torsion spring accumulates torsion. When the rescue rope is released, the emergency unlocking torsion spring releases the torsion force, causing the emergency unlocking piece 33 to swivel counterclockwise and disengage from the shackle 3. Specifically, the fixing portion of the emergency release tab 33 for fixing the external rescue rope may be a through hole or a pillar. Specifically, the emergency unlocking piece 33 includes a main portion vertically provided on the door knife bottom plate 1, and a branch portion extending along the upper right of the main portion, on which a fixing portion for fixing an external rescue rope is provided.

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

as shown in fig. 2-3, when the car is in an unlocking area and receives a door opening command, the motor acts to enable the synchronous belt to move in the door opening direction, the starting block 6 rotates around the starting rod in the door opening direction axially under the action of the synchronous belt, the door knife arm assembly 2 is driven by the connecting rod assembly 4 to be folded inwards to clamp a landing door ball, the landing door lock is unlocked, one end of the lock hook connecting rod 5 is enabled to be pressed and acted to the upper right through the action of the connecting rod assembly 4, the connecting rod assembly 4 drives the lock hook connecting rod 5 to swing, the tail end of the lock hook 3 is driven to rotate downwards by the lock hook connecting rod 5, the hook end of the lock hook 3 rotates upwards to unlock the car door lock hook 3, the switch contact 8 is driven to move in the door opening direction (the switch contact 8 moves to the right) on the door knife bottom plate 1 to be separated from the switch socket 9, unlocking is achieved, and the car normally opens.

As shown in fig. 1, when the car is in the unlocking area and receives a door closing instruction, the starting rod is driven by a motor force to act in a door closing direction, the rolling bearing 22 on the swinging rod 19 contacts the curve plate fixed on the bottom plate of the door machine, so that the swinging rod 19 rotates and drives the limiting bearing 21 to separate from the limiting groove 25 on the starting block 6 and move on the limiting curved surface of the starting block 6, the starting block 6 starts to rotate and drives the door knife arm assembly 2 to open outwards through the connecting rod assembly 4, the rotating member 18 is in a free state at the moment, the locking hook 3 is in a locking state under the influence of self gravity and the elastic member 10, specifically, the hook end of the locking hook 3 rotates downwards through the self gravity and potential energy accumulated by the elastic member 10, and drives the switch contact 8 to move to the contact switch socket 9 in the door closing direction (the switch contact 8 moves leftwards) on the door knife bottom plate 1, and the normal door closing of the car is realized.

In this embodiment, as shown in fig. 2-3, when the car is in the unlocking area and the door is pulled out from the car, the car door is forced to move towards the door opening direction by an external force until the right door knife arm 30 touches the landing door ball, the right door knife arm 30 expands outwards under the resistance of the landing door ball, so that the first connecting block 31 and the second connecting block 32 rotate clockwise and drive the left door knife arm 29 and the right door knife arm 30 to rotate, one end of the latch hook connecting rod 5 is pressed and acted on to the right through the action of the connecting rod assembly 4, the connecting rod assembly 4 drives the latch hook connecting rod 5 to swing, the tail end of the latch hook connecting rod 5 drives the latch hook 3 to rotate downwards, the hook end of the latch hook 3 rotates upwards, the car door lock hook 3 is unlocked, and the switch contact 8 is driven to move towards the door opening direction (the switch contact 8 moves to the right) on the door knife bottom plate 1 to be separated from the switch socket 9, and the unlocking is realized.

In this embodiment, as shown in fig. 4, when the car is in the unlocking area and the door is pulled out of the car, the landing door is unlocked by the triangular key, so that the landing door moves towards the door opening direction until the left door knife arm 29 contacts the landing door ball, the left door knife arm 29 expands outwards under the resistance of the landing door ball, the first connecting block 31 and the second connecting block 32 rotate clockwise and drive the left door knife arm 29 and the right door knife arm 30 to rotate, one end of the latch hook connecting rod 5 is pressed and acted on to the right through the action of the connecting rod assembly 4, the connecting rod assembly 4 drives the latch hook connecting rod 5 to swing, the latch hook 5 drives the tail end of the latch hook 3 to rotate downwards, the hook end of the latch hook 3 rotates upwards, the car door lock hook 3 is unlocked, and the switch contact 8 is driven to move towards the door opening direction (the switch contact 8 moves to the right) on the door knife bottom plate 1 to be separated from the switch socket 9, and the unlocking is realized, and the car opens the door.

In this embodiment, as shown in fig. 5, when the car is in the non-unlocking area and the motor is in the wrong door opening, the motor acts to make the synchronous belt move towards the door opening direction, the synchronous belt drives the starting rod, the starting rod drives the starting block 6 to rotate, so that the first connecting block 31 rotates anticlockwise, the left door knife arm 29 and the right door knife arm 30 continue to clamp inwards because of no layer of door ball in the middle of the moment, one end of the lock hook connecting rod 5 is not acted by the extrusion force on the right upper side, the lock hook connecting rod 5 keeps a free state at the moment, the lock hook 3 is still in a locking state, and the normal door closing locking state is still kept with the switch bracket integrated on the bottom plate of the door machine. Specifically, the hook end of the latch hook 3 is kept in a downward state by its own weight and potential energy accumulated by the elastic member 10, so that the switch contact 8 is kept in contact with the switch socket 9, and is kept in a locked state.

When the car is in a non-unlocking area and the door is taken off in the car, the motor does not act, the starting rod, the starting block 6 and the linkage plate are also kept motionless, the door hanging plate drives the door knife bottom plate 1 to move towards the door opening direction during taking off the door, the whole connecting rod car door lock device wholly moves towards the door opening direction until the lock hook 3 hooks the switch fixing plate fixed on the door machine, and because in the non-unlocking area, the left door knife arm 29 and the right door knife arm 30 cannot contact the landing door ball, the left door knife arm 29 and the right door knife arm 30 do not act, 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 door opening distance is less than 50mm, and national standard requirements are met.

When the car is in a non-unlocking area, the landing door is unlocked by a triangular key firstly, the landing door is enabled to move to be completely opened in the door opening direction, the rescue rope is manually pulled downwards, the rescue rope fixing part moves downwards to drive the emergency unlocking piece 33 to rotate in the clockwise direction, after the emergency unlocking piece 33 overcomes the torsion force of the emergency unlocking torsion spring, one end pushes the limiting piece 15 arranged at the upper end of the locking hook 3, the locking hook 3 rotates in the anticlockwise direction, the car door is unlocked, the car door is manually unlocked again, after the rescue rope is released, the emergency unlocking torsion spring releases the torsion force to enable the emergency unlocking piece 33 to rotate in the anticlockwise direction, and the hook end of the locking hook 3 is automatically reset through the potential energy accumulated by the elastic piece 10, so that the locking state is maintained.

Compared with the prior art, the elevator connecting rod car door lock device and the control method thereof provided by the embodiment can ensure that the mechanical part is locked and the safety verification of an electric loop is ensured, so that the car door lock is simple in structure, convenient to install and debug, the maintenance difficulty and the elevator cost are reduced, the reliability and the safety of the car door lock are improved, and the opening and closing door of various conditions becomes simpler, more reliable and safer in a linkage opening and closing door mode.

Those skilled in the art will appreciate that the drawing is merely a schematic illustration of a preferred implementation scenario and that the modules or flows in the drawing are not necessarily required to practice the invention.

Those skilled in the art will appreciate that modules in an apparatus in an implementation scenario may be distributed in an apparatus in an implementation scenario according to an implementation scenario description, or that corresponding changes may be located in one or more apparatuses different from the implementation scenario. 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 inventive sequence numbers are merely for description and do not represent advantages or disadvantages of the implementation scenario.

The foregoing disclosure is merely illustrative of some embodiments of the invention, and the invention is not limited thereto, as modifications may be made by those skilled in the art without departing from the scope of the invention.

Claims (6)

1. An elevator connecting rod car door lock device, characterized by comprising:

the door knife comprises a door knife bottom plate, a door knife arm assembly, a lock hook, a connecting rod assembly, a lock hook connecting rod, a starting block, a verification switch and a swing rod assembly, wherein the door knife arm assembly, the lock hook, the starting block and the swing rod assembly are movably arranged on the door knife bottom plate, the swing rod assembly is clamped with the starting block, one end of the connecting rod assembly is connected with the starting block, the other end of the connecting rod assembly is connected with the door knife arm assembly, and the lock hook connecting rod is arranged on the lock hook and is rotatably connected with the connecting rod assembly;

the verification switch comprises a switch contact and a switch socket, wherein the switch socket is arranged on an external base above the lock hook and is positioned on the side surface of the switch contact, the switch contact is movably arranged on the door knife bottom plate, the lock hook comprises a hook end, a tail end, an upper end and a lower end, the tip of the hook end of the lock hook faces downwards, the upper end of the lock hook is movably arranged on the switch contact in a penetrating manner, and the lower end of the lock hook is elastically connected to the door knife bottom plate through an elastic piece;

the starting block is used for driving the door knife arm assembly to retract inwards through the connecting rod assembly, so that the connecting rod assembly drives the hook end of the lock hook to rotate upwards through the lock hook connecting rod, the car door lock hook is unlocked, and the switch contact is driven to move on the door knife bottom plate to be separated from the switch socket;

when the swing rod assembly moves on the starting block, the starting block is used for driving the door knife arm assembly to open outwards through the connecting rod assembly, so that the hook end of the lock hook rotates downwards through potential energy accumulated by the elastic piece, the car door lock is locked, and the switch contact is driven to move on the door knife bottom plate until contacting the switch socket;

the door knife comprises a door knife bottom plate, a door knife guide rail and a fixing block, wherein the door knife bottom plate is provided with a door knife guide rail, and the door knife guide rail is movably arranged on the fixing block in a penetrating mode;

the switch contact comprises a contact pin and a contact pin mounting seat for mounting the contact pin, the needle head of the contact pin faces the side face of the door knife bottom plate, the contact pin mounting seat is fixedly connected to the movable guide rail, a through hole is further formed in the contact pin mounting seat, the upper end of the lock hook comprises a limiting piece, and the limiting piece is arranged in the through hole of the contact pin mounting seat in a penetrating mode, so that the lock hook can drive the contact pin to contact or separate from the switch socket through the movable guide rail;

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, one end of the swing rod spring is connected with the door knife bottom plate, the other end of the swing rod spring is connected with the swing rod, one end of the swing rod is provided with a limit bearing, and the other end of the swing rod is provided with a rolling bearing;

the limiting bearing is used for being clamped with the starting block, and the rolling bearing is used for contacting a curve plate on a bottom plate of an external door machine, so that the swing rod rotates and drives the limiting bearing to move on the starting block; the rolling bearing is also used for enabling the swing rod to rotate and driving the limit bearing to be clamped with the starting block through the downward movement of the swing rod spring to be separated from the curve plate;

the door knife comprises a door knife bottom plate, a door knife seat and a door knife seat, and is characterized by also comprising a swing rod limiting piece, wherein the swing rod limiting piece is arranged on the door knife bottom plate;

when the swing rod moves on the starting block, the swing rod limiting piece is used for limiting the swing rod;

the starting block comprises a limiting groove, and the limiting groove is used for accommodating a limiting bearing on the swing rod and limiting the swing rod.

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

the connecting rod assembly comprises a first connecting rod, a second connecting rod and a rotating piece, wherein the first end of the first connecting rod, the first end of the second connecting rod and the locking hook connecting rod are coaxially sleeved on the rotating piece;

the second end of the first connecting rod is rotationally connected with the starting block, the second end of the second connecting rod is rotationally connected with the door knife arm assembly, so that the starting block can drive the door knife arm assembly to open outwards or tighten inwards through the first connecting rod and the second connecting rod, and the lock hook is driven to rotate through the lock hook connecting rod.

3. The elevator connecting rod car door lock device according to claim 1, wherein:

the emergency unlocking device comprises an emergency unlocking plate and an emergency unlocking torsion spring, the emergency unlocking plate is rotatably arranged on the door knife bottom plate, and the emergency unlocking torsion spring is rotatably connected with the emergency unlocking plate;

one end of the emergency unlocking plate is provided with a fixing part for fixing an external rescue rope, so that the rescue rope can drive the emergency unlocking plate to rotate clockwise, the emergency unlocking plate can drive the hook end of the lock hook to move upwards, and the emergency unlocking torsion spring accumulates torsion;

when the rescue rope is released, the emergency unlocking torsion spring releases torsion force, so that the emergency unlocking piece rotates anticlockwise and is separated from the lock hook.

4. A control method using the elevator connecting rod car door lock device according to any one of claims 1 to 3, characterized in that:

when the lift car is in an unlocking area and receives a door opening instruction, the starting block rotates towards the door opening direction under the action of external force, the door knife arm assembly is driven by the connecting rod assembly to be inwards folded to clamp a landing door ball, the landing door lock is unlocked, the hook end of the lock hook is driven by the lock hook connecting rod to upwards rotate through the connecting rod assembly, the lift car door lock hook is unlocked, the switch contact is driven to move to be separated from the switch socket in the door opening direction on the door knife bottom plate, unlocking is achieved, and the lift car is normally opened;

when the lift car is in an unlocking area and receives a door closing instruction, under the action of external force, the rolling bearing on the swinging rod contacts a curve plate fixed on a bottom plate of the door machine, so that the swinging rod rotates and drives the limiting bearing to move on the starting block, the starting block starts to rotate and drives the door knife arm assembly to open outwards through the connecting rod assembly, the hook end of the lock hook rotates downwards through gravity and potential energy accumulated by the elastic piece, and drives the switch contact to move to contact with the switch socket in the door closing direction on the door knife bottom plate, and the lift car is locked normally.

5. The control method of the elevator connecting rod car door lock device according to claim 4, characterized in that:

when the lift car is in an unlocking area and the door is pulled out from the lift car, the lift car door is moved to the door opening direction by external force until a right door knife arm touches the landing ball, the right door knife arm expands outwards under the resistance of the landing 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 lock hook connecting rod drives the hook end of the lock hook to rotate upwards through the connecting rod assembly, the lift car door lock hook is unlocked, and the switch contact is driven to move to the door opening direction on the door knife bottom plate to be separated from the switch socket, unlocking is realized, and the lift car door is opened;

when the elevator car is in an unlocking area and the elevator car is used for taking off the elevator car, firstly, a triangular key is used for unlocking the elevator car, so that the elevator car moves towards the opening direction until the left door knife arm touches the elevator car door ball, the left door knife arm expands outwards under the resistance of the elevator car door ball, 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 lock hook connecting rod drives the hook end of the lock hook to rotate upwards through the connecting rod assembly, the elevator car door lock hook is unlocked, the switch contact is driven to move towards the opening direction on the door knife bottom plate to be separated from the switch socket, unlocking is realized, and the elevator car is opened.

6. The control method of the elevator connecting rod car door lock device according to claim 5, characterized in that:

when the car is in a non-unlocking area and the motor opens the door by mistake, the motor acts to drive the starting block to rotate, so that the first connecting block rotates anticlockwise, the left door knife arm and the right door knife arm continue to clamp inwards, at the moment, the hook end of the lock hook keeps a downward state through gravity and potential energy accumulated by the elastic piece, so that the switch contact keeps in contact with the switch socket and keeps in a locking state;

when the car is in a non-unlocking area and the door is taken off in the car, the motor does not act, the starting block and the linkage plate also remain motionless, the door hanging plate drives the door knife bottom plate to move towards the door opening direction during door taking, the whole connecting rod 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 left door knife arm and the right door knife arm are not contacted with the landing ball, the left door knife arm and the right door knife arm do not act, and the door hanging plate continues to move towards the door opening direction until the lock hook hooks the hook plate fixed on the door machine;

when the car is in a non-unlocking area, the triangular key is firstly used for unlocking the landing door, so that the landing door moves to be completely opened in the door opening direction, the rescue rope is manually pulled downwards, the rescue rope fixing part moves downwards to drive the emergency unlocking plate to rotate in the clockwise direction, after the emergency unlocking plate overcomes the torsion force of the emergency unlocking torsion spring, one end of the emergency unlocking plate pushes the locking hook to enable the locking hook to rotate in the anticlockwise direction, the unlocking of the car door is realized, after the car door is manually pulled open, the rescue rope is released, the torsion force is released by the emergency unlocking torsion spring to enable the emergency unlocking plate to rotate in the anticlockwise direction, and the hook end of the locking hook automatically resets through the potential energy accumulated by the elastic piece to keep the locking state.

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