CN116281526A - Hoistway door opening warning device and door opening method - Google Patents

Abstract

The invention relates to the technical field of elevators and discloses an elevator hoistway door opening warning device and an elevator hoistway door opening method, wherein the elevator hoistway door opening warning device comprises a rotary lock hook, a first steel wire rope, a second steel wire rope, a collision rod and a travel limiting piece, one end of the rotary lock hook is connected with a lock rod of a hoistway door lock through the first steel wire rope, and one end of the collision rod is connected with the lock rod of the hoistway door lock through the second steel wire rope; the driving door hanging plate is respectively provided with a first limiting piece and a second limiting piece, the first limiting piece is used for limiting the counterclockwise rotation limit position of the collision rod, and the second limiting piece is used for limiting the clockwise rotation limit position of the collision rod; the invention provides an elevator hoistway door opening warning device and an elevator hoistway door opening method, which solve the problem that potential safety hazards exist when the existing elevator hoistway door is opened.

Description

Hoistway door opening warning device and door opening method

Technical Field

The invention relates to the technical field of elevators, in particular to an elevator hoistway door opening warning device and an elevator hoistway door opening method.

Background

The elevator hoistway doors are all provided with door locks, and an operator can operate the door locks to unlock each floor of elevator hoistway doors through keys matched with unlocking triangular key holes. However, in actual operation, there is a situation that the elevator car is not stopped at the landing after the operator has opened the hoistway door, and at this time, the empty hoistway is directly exposed, and no safety measures are taken, so that a safety accident that the operator falls into the hoistway from the hoistway door is easy to occur.

At present, for preventing personnel falling accidents caused by the abnormal operation of unlocking the hoistway door, only preventive measures in the aspects of personnel safety management and regulation are remained, and the occurrence of potential safety hazards cannot be fundamentally prevented, so that how to improve the hardware technology of the hoistway door and further prevent the personnel falling accidents caused by the abnormal use of the triangle key of the hoistway door is an urgent problem to be solved at present.

Disclosure of Invention

The invention aims to provide an elevator hoistway door opening warning device and an elevator hoistway door opening method, which are used for solving at least one of the problems in the prior art.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

the door opening warning device of the hoistway door comprises a rotary lock hook, a first steel wire rope, a second steel wire rope, a collision rod and a travel limiting piece, wherein one end of the rotary lock hook is connected with a lock rod of the hoistway door lock through the first steel wire rope, and one end of the collision rod is connected with the lock rod of the hoistway door lock through the second steel wire rope;

the driving door hanging plate is respectively provided with a first limiting piece and a second limiting piece, the first limiting piece is used for limiting the counterclockwise rotation limit position of the collision rod, and the second limiting piece is used for limiting the clockwise rotation limit position of the collision rod;

when the collision rod is abutted with the first limiting piece and the collision rod moves horizontally, the rotating lock hook is separated from the fixed lock hook, and the collision rod collides with the travel limiting piece to limit a gap which can be opened by the hoistway door;

when the collision rod is abutted with the second limiting piece, the moving path of the collision rod completely avoids the travel limiting piece in the horizontal moving process of the collision rod.

In the technical scheme, since one end of the rotary latch hook is connected with the lock rod of the hall door lock through the first steel wire rope, one end of the collision rod is connected with the lock rod of the hall door lock through the second steel wire rope, the rotary control of the rotary latch hook and the collision rod can be simultaneously realized through the rotary operation of the lock rod, so that the hooking and separating states of the rotary latch hook and the fixed latch hook and whether the horizontal movement distance of the collision rod can be limited by the stroke limiting piece are controlled, and the openable gap of the hall door is limited.

Because the striker is rotationally connected to the active door hanging plate and the torsion spring is arranged on the rotating shaft of the striker, the active door hanging plate is respectively provided with a first limiting piece and a second limiting piece, the first limiting piece is used for limiting the counterclockwise rotation limit position of the striker, the second limiting piece is used for limiting the clockwise rotation limit position of the striker, the lock rod is provided with a reset torsion spring, the triangle key rotates counterclockwise to open the door (the lock rod rotates clockwise when being observed from the inner side surface of the hall door in fig. 1), the lock rod pulls one end of the rotating lock hook through the first steel wire rope, so that the rotating lock hook is separated from the fixed lock hook, the downward spring above the rotating lock hook is in a compressed state at the moment, meanwhile, the lock rod pulls one end of the striker through the second steel wire rope, the striker rotates counterclockwise to a state of being in contact with the first limiting piece, the first adjustment of the height of the upper end of the striker relative to the travel limiting piece is realized, and the torsion spring twists energy storage in the counterclockwise rotation process of the striker; the triangular key rotates the lock rod clockwise or pulls out the key (the lock rod rotates anticlockwise when being observed from the inner side surface of the hall door in fig. 1), the lock rod rotates clockwise (the lock rod rotates anticlockwise when being observed from the inner side surface of the hall door in fig. 1) under the action of the reset torsion spring, so that the first steel wire rope and the second steel wire rope are loosened, the rotary lock hook falls under the action of the downward-pressing spring, the striker rotates clockwise to a state of abutting against the second limiting piece against the force of the torsion spring of the striker, and the second adjustment of the height of the upper end of the striker relative to the travel limiting piece is realized; the triangular key is used for operating the lock rod, so that the height of the upper end of the collision rod relative to the travel limiting piece is adjusted, and whether collision with the travel limiting piece is needed in the horizontal movement process of the collision rod or not is controlled according to the requirement, and the openable gap of the hoistway door is limited; the arrangement of the first limiting piece and the second limiting piece is convenient for realizing two states of the striker rod rapidly through the operation of the lock rod and providing operation feedback.

The movable door is provided with a first limiting piece, a second limiting piece is arranged on the movable door, and a rotary lock hook is arranged on the movable door; because the collision rod is abutted with the second limiting part, the moving path of the collision rod completely avoids the travel limiting part in the horizontal moving process of the collision rod, and at the moment, the rotating lock hook and the fixed lock hook cannot be hooked in the incompletely closed state of the hall door, namely, are in a separation state, and cannot be influenced by the travel limiting part in the manual pushing process of the hall door, so that the hall door can be completely opened manually.

By implementing the technical scheme, when the hoistway door is opened, the key can be turned anticlockwise, the hoistway door is pushed away manually while the unlocking state is maintained, in the process, the striker rod moves horizontally, and the striker rod impacts the travel limiting piece to limit the gap between the pushed hoistway door and further provide convenience for observing whether the elevator car is parked in place; if the elevator car stops in place, the hoistway door can be closed for a certain distance, and the rotating lock hook and the fixed lock hook cannot be hooked under the condition that the hoistway door is not completely closed, namely, the rotating lock hook and the fixed lock hook are in a separation state, then the hoistway door is pushed open after the key is rotated clockwise or taken out, and the travel path of the striker rod along with the horizontal movement of the hoistway door completely avoids the travel limiting part, so that the hoistway door can be completely opened.

By means of the technical scheme, a certain gap of the hoistway door can be opened firstly, convenience is provided for observing whether the elevator car is completely stopped in place, and then the hoistway door is completely opened, so that the opening safety of the hoistway door is improved to a great extent.

Further, in order to be convenient for observe in the elevator well when opening certain clearance at the hoistway door, the travel limiting part is travel limit switch, and in the collision wheel of travel limit switch is impacted to the collision pole when collision pole and first locating part butt and collision pole horizontal migration in-process, travel limit switch is connected with well illumination control circuit electricity.

Further, in order to carry out adaptive matching installation with the current hall door structure with this design, including last bank frame and track, go up bank frame and track fixed connection, fixed latch hook is fixed on last bank frame, rotate the latch hook and rotate and connect on the initiative door link plate and rotate and be equipped with down the spring between latch hook and the initiative door link plate, initiative door link plate along track horizontal migration, travel limiter fixed mounting is on last bank frame.

Further, in order to facilitate the realization of guiding the paths of the first steel wire rope and the second steel wire rope, the device further comprises a first guide piece and a second guide piece, wherein the first steel wire rope penetrates through two ends of the first guide piece to be respectively connected with one end of the rotary lock hook and the lock rod, and the second steel wire rope penetrates through two ends of the second guide piece to be respectively connected with one end of the striker rod and the lock rod.

Further, in order to facilitate the installation of the first guide and the second guide, the first guide and the second guide are fixedly disposed on the hoistway door.

Further, in order to provide a simple structure and be convenient for realize having structural design to two direction spacing of lance, first locating part and second locating part all are located the below of lance, first locating part is located the below of second locating part.

Further, in order to provide a specific structural design, the first limiting member is located at the left side of the second limiting member, the travel limiting member is located at the right side of the striker, and the travel limiting member is located above the second limiting member.

Further, in order to simplify the structures of the first limiting piece and the second limiting piece, the first limiting piece and the second limiting piece are limiting columns or limiting blocks.

Further, in order to facilitate the pulling of the second wire rope to the striker rod, one end of the striker rod, which is close to the first limiting piece, is connected with the second wire rope.

The invention also provides an elevator hoistway door opening method, which comprises the following steps:

s1: aligning the key with the lock rod, rotating the lock rod forward, separating the rotating lock hook from the fixed lock hook, and rotating the striker counterclockwise to a state of abutting against the first limiting piece, wherein the striker is in an unlocking state;

s2: the hoistway lighting control circuit is triggered, hoistway lighting is started, and the position of the car is conveniently observed from the gap;

s3: if the elevator car stops at a proper position, closing the hoistway door for a certain distance and ensuring that the rotating lock hook is separated from the fixed lock hook;

s4: and then reversely rotating the lock rod or taking out the key, pushing the hoistway door, wherein the striker completely avoids the striker wheel of the travel limit switch along with the moving path of the striker in the horizontal moving process of the hoistway door, and the hoistway door is completely opened.

The beneficial effects of the invention are as follows: in the technical scheme, since one end of the rotary latch hook is connected with the lock rod of the hall door lock through the first steel wire rope, one end of the collision rod is connected with the lock rod of the hall door lock through the second steel wire rope, the rotary control of the rotary latch hook and the collision rod can be simultaneously realized through the rotary operation of the lock rod, so that the hooking and separating states of the rotary latch hook and the fixed latch hook and whether the horizontal movement distance of the collision rod can be limited by the stroke limiting piece are controlled, and the openable gap of the hall door is limited.

Because the striker is rotationally connected to the active door hanging plate and the torsion spring is arranged on the rotating shaft of the striker, the active door hanging plate is respectively provided with a first limiting piece and a second limiting piece, the first limiting piece is used for limiting the counterclockwise rotation limit position of the striker, the second limiting piece is used for limiting the clockwise rotation limit position of the striker, the lock rod is provided with a reset torsion spring, the triangle key rotates counterclockwise to open the door (the lock rod rotates clockwise when being observed from the inner side surface of the hall door in fig. 1), the lock rod pulls one end of the rotating lock hook through the first steel wire rope, so that the rotating lock hook is separated from the fixed lock hook, the downward spring above the rotating lock hook is in a compressed state at the moment, meanwhile, the lock rod pulls one end of the striker through the second steel wire rope, the striker rotates counterclockwise to a state of being in contact with the first limiting piece, the first adjustment of the height of the upper end of the striker relative to the travel limiting piece is realized, and the torsion spring twists energy storage in the counterclockwise rotation process of the striker; the triangular key rotates the lock rod clockwise or pulls out the key (the lock rod rotates anticlockwise when being observed from the inner side surface of the hall door in fig. 1), the lock rod rotates clockwise (the lock rod rotates anticlockwise when being observed from the inner side surface of the hall door in fig. 1) under the action of the reset torsion spring, so that the first steel wire rope and the second steel wire rope are loosened, the rotary lock hook falls under the action of the downward-pressing spring, the striker rotates clockwise to a state of abutting against the second limiting piece against the force of the torsion spring of the striker, and the second adjustment of the height of the upper end of the striker relative to the travel limiting piece is realized; the triangular key is used for operating the lock rod, so that the height of the upper end of the collision rod relative to the travel limiting piece is adjusted, and whether collision with the travel limiting piece is needed in the horizontal movement process of the collision rod or not is controlled according to the requirement, and the openable gap of the hoistway door is limited; the arrangement of the first limiting piece and the second limiting piece is convenient for realizing two states of the striker rod rapidly through the operation of the lock rod and providing operation feedback.

The movable door is provided with a first limiting piece, a second limiting piece is arranged on the movable door, and a rotary lock hook is arranged on the movable door; because the collision rod is abutted with the second limiting part, the moving path of the collision rod completely avoids the travel limiting part in the horizontal moving process of the collision rod, and at the moment, the rotating lock hook and the fixed lock hook cannot be hooked in the incompletely closed state of the hall door, namely, are in a separation state, and cannot be influenced by the travel limiting part in the manual pushing process of the hall door, so that the hall door can be completely opened manually.

By implementing the technical scheme, when the hoistway door is opened, the key can be turned anticlockwise, the hoistway door is pushed away manually while the unlocking state is maintained, in the process, the striker rod moves horizontally, and the striker rod impacts the travel limiting piece to limit the gap between the pushed hoistway door and further provide convenience for observing whether the elevator car is parked in place; if the elevator car stops in place, the hoistway door can be closed for a certain distance, and the rotating lock hook and the fixed lock hook cannot be hooked under the condition that the hoistway door is not completely closed, namely, the rotating lock hook and the fixed lock hook are in a separation state, then the hoistway door is pushed open after the key is rotated clockwise or taken out, and the travel path of the striker rod along with the horizontal movement of the hoistway door completely avoids the travel limiting part, so that the hoistway door can be completely opened.

By means of the technical scheme, a certain gap of the hoistway door can be opened firstly, convenience is provided for observing whether the elevator car is completely stopped in place, and then the hoistway door is completely opened, so that the opening safety of the hoistway door is improved to a great extent.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

fig. 2 is a schematic diagram of a structure of a travel limit switch for controlling illumination of a hoistway in the present invention.

In the figure: rotating the latch hook 1; a first wire rope 2; a second wire rope 3; a striker 4; a driving door hanging plate 5; a first stopper 6; a second stopper 7; a fixed latch hook 8; a travel limit switch 9; a striker wheel 10; an upper ridge frame 11; a track 12; a first guide 13; a second guide 14; a lock lever 15; a hall door 16; a torsion spring 17; the spring 18 is depressed.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be briefly described below with reference to the accompanying drawings and the description of the embodiments or the prior art, and it is obvious that the following description of the structure of the drawings is only some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art. It should be noted that the description of these examples is for aiding in understanding the present invention, but is not intended to limit the present invention.

Example 1:

as shown in fig. 1, the present embodiment provides an elevator hoistway door opening warning device, which includes a rotary latch hook 1, a first steel wire rope 2, a second steel wire rope 3, a striker 4 and a travel limiting member, wherein one end of the rotary latch hook 1 is connected with a lock rod 15 of a hoistway door lock through the first steel wire rope 2, and one end of the striker 4 is connected with the lock rod 15 of the hoistway door lock through the second steel wire rope 3;

the striker 4 is rotatably connected to the driving door hanging plate 5, a torsion spring 17 is arranged on a rotating shaft of the striker 4, a first limiting piece 6 and a second limiting piece 7 are respectively arranged on the driving door hanging plate 5, the first limiting piece 6 is used for limiting the counterclockwise rotation limit position of the striker 4, and the second limiting piece 7 is used for limiting the clockwise rotation limit position of the striker 4;

when the collision rod 4 is abutted with the first limiting piece 6 and the collision rod 4 moves horizontally, the rotary lock hook 1 is separated from the fixed lock hook 8, and the collision rod 4 collides with the travel limiting piece to limit a gap which can be opened by the hoistway door 16;

when the plunger 4 abuts against the second stopper 7, the travel path of the plunger 4 completely avoids the travel stopper during the horizontal movement of the plunger 4.

In this technical scheme, because the one end of rotating latch hook 1 is connected with the locking lever 15 of hall door lock through first wire rope 2, the one end of striker 4 is connected with the locking lever 15 of hall door lock through second wire rope 3, through the rotation operation to locking lever 15 then can realize simultaneously the rotation control to rotating latch hook 1 and striker 4 to control the state of hooking and breaking away from of rotating latch hook 1 and fixed latch hook 8 and whether stroke limiter can carry out spacingly to the horizontal migration distance of striker 4, thereby restriction hall door 16 openable clearance.

Because the striker 4 is rotationally connected to the active door hanging plate 5 and the torsion spring 17 is arranged on the rotating shaft of the striker 4, the active door hanging plate 5 is respectively provided with the first limiting piece 6 and the second limiting piece 7, the first limiting piece 6 is used for limiting the counterclockwise rotation limit position of the striker 4, the second limiting piece 7 is used for limiting the clockwise rotation limit position of the striker 4, the lock rod 15 is provided with a reset torsion spring, the triangular key rotates counterclockwise to open the door (the lock rod 15 rotates clockwise when being observed from the inner side surface of the hall door in fig. 1), the lock rod 15 pulls one end of the rotating lock hook 1 through the first steel wire rope 2, so that the rotating lock hook 1 is separated from the fixed lock hook 8, the pressing spring 18 above the rotating lock hook 1 is in a compressed state at the moment, meanwhile, the lock rod 15 pulls one end of the striker 4 through the second steel wire rope 3, the striker 4 rotates counterclockwise to a state of being in conflict with the first limiting piece 6, the first adjustment of the height of the upper end of the striker 4 relative to the travel limiting piece is realized, and the torsion spring 17 stores energy in the counterclockwise rotation process; the triangular key rotates the lock rod 15 clockwise or pulls out the key (the lock rod 15 rotates anticlockwise when being observed from the inner side surface of the hall door in fig. 1), the lock rod rotates clockwise (the lock rod 15 rotates anticlockwise when being observed from the inner side surface of the hall door in fig. 1) under the action of the reset torsion spring, so that the first steel wire rope 2 and the second steel wire rope 3 are loosened, the rotary lock hook 1 falls under the action of the pressing spring 18, the striker 4 rotates clockwise to a state of abutting against the second limiting piece 7 against the force of the torsion spring 17 of the striker 4, and the second adjustment of the height of the upper end of the striker 4 relative to the travel limiting piece is realized; the upper end of the striker 4 is adjusted to be relative to the stroke limiting piece by the operation of the triangular key on the lock rod 15, so that whether the striker 4 needs to collide with the stroke limiting piece in the horizontal movement process or not can be controlled according to the requirement, and the openable gap of the hoistway door 16 is limited; the arrangement of the first limiting piece 6 and the second limiting piece 7 is convenient for realizing two states of the striker 4 through the operation of the lock rod 15, and provides operation feedback.

Because the striker 4 is abutted with the first limiting piece 6 and the rotating lock hook 1 is separated from the fixed lock hook 8 in the horizontal movement process of the striker 4, at the moment, the opening operation of the hall door 16 can be realized, and because the striker 4 collides with the travel limiting piece, the openable gap of the hall door 16 is limited while the hall door 16 is opened; since the striker 4 abuts against the second limiting member 7, the travel path of the striker 4 completely avoids the travel limiting member during the horizontal movement of the striker 4, and at this time, the rotating lock hook 1 and the fixed lock hook 8 are not hooked in the incompletely closed state of the hall door 16, that is, are in the disengaged state, and are not affected by the travel limiting member during the manual pushing of the hall door 16, so that the hall door 16 can be completely opened manually.

By implementing the technical scheme, when the hoistway door 16 is opened, the key can be turned anticlockwise, the hoistway door 16 is pushed away manually while the unlocking state is maintained, in the process, the striker 4 moves horizontally, the striker 4 impacts the travel limiting piece, the gap of the pushed hoistway door 16 is limited, and convenience is provided for observing whether the elevator car is parked in place; if the elevator car is parked in place, the hoistway door 16 can be closed for a certain distance, and the rotating lock hook 1 and the fixed lock hook 8 cannot be hooked in the state that the hoistway door 16 is not completely closed, that is, the rotating lock hook 1 and the fixed lock hook 8 are in a separated state, then the key is rotated clockwise or taken out, the hoistway door 16 is pushed open, and the travel path of the striker 4 completely avoids the travel limiting member in the horizontal movement process of the hoistway door 16 along with the striker 4, so that the hoistway door 16 can be completely opened.

By implementing the technical scheme, the hoistway door 16 can be opened at certain intervals, convenience is provided for observing whether the elevator car is completely stopped in place, and then the hoistway door 16 is completely opened, so that the opening safety of the elevator hoistway door is improved to a great extent.

Example 2:

this example was optimized based on example 1 above.

As shown in fig. 2, in order to facilitate the observation of the elevator hoistway while the hoistway door 16 is opened with a certain gap, the travel limit member is a travel limit switch 9, and when the striker 4 abuts against the first limit member 6 and the striker 4 moves horizontally, the striker 4 strikes the striker wheel 10 of the travel limit switch 9, and the travel limit switch 9 is electrically connected with the hoistway lighting control circuit. The travel limit switch 9 is arranged, so that hoistway lighting can be automatically started after the hoistway door 16 is started to a set gap limit position state, the whole hoistway is illuminated, a person who opens the hoistway can clearly observe the position of a car, and personnel falling accidents caused by blind entering of the position of the car which is not seen clearly are prevented. In addition, the mechanical limit and the starting of well illumination are combined into a whole, and the mechanical limit and the starting of well illumination can be realized only by using the travel limit switch 9, so that the structural design is more simplified.

Example 3:

this example was optimized based on example 1 above.

In order to carry out adaptive matching installation with the existing hoistway door 16 structure, the elevator comprises an upper sill frame 11 and a rail 12, wherein the upper sill frame is fixedly connected with the rail 12, a fixed lock hook 8 is fixed on the upper sill frame 11, a rotary lock hook 1 is rotationally connected to a driving door hanging plate 5, a downward-pressing spring 18 is arranged between the rotary lock hook 1 and the driving door hanging plate 5, the driving door hanging plate 5 horizontally moves along the rail 12, and a travel limiting part is fixedly arranged on the upper sill frame 11.

Example 4:

this example was optimized based on example 1 above.

In order to facilitate guiding the paths of the first steel wire rope 2 and the second steel wire rope 3, the device further comprises a first guide piece 13 and a second guide piece 14, wherein the first steel wire rope 2 passes through two ends of the first guide piece 13 to be respectively connected with one end of the rotary latch hook 1 and the lock rod 15, and the second steel wire rope 3 passes through two ends of the second guide piece 14 to be respectively connected with one end of the striker 4 and the lock rod 15.

Example 5:

this example was optimized based on example 4 above.

In order to facilitate the installation of the first guide 13 and the second guide 14, the first guide 13 and the second guide 14 are fixedly provided on the hoistway door 16.

Example 6:

this example was optimized based on example 1 above.

In order to provide a structural design which is simple in structure and convenient for realizing the limiting of the striker 4 in two directions, the first limiting piece 6 and the second limiting piece 7 are both positioned below the striker 4, and the first limiting piece 6 is positioned below the second limiting piece 7.

Example 7:

this example was optimized based on example 6 above.

In order to provide a specific structural design, the first limiting member 6 is located at the left side of the second limiting member 7, the travel limiting member is located at the right side of the striker 4, and the travel limiting member is located above the second limiting member 7.

Example 8:

this example was optimized based on example 1 above.

In order to simplify the structure of the first limiting member 6 and the second limiting member 7, the first limiting member 6 and the second limiting member 7 are limiting posts or limiting blocks.

Example 9:

this example was optimized based on example 1 above.

In order to facilitate the pulling of the second wire rope 3 on the striker 4, one end of the striker 4, which is close to the first stopper 6, is connected with the second wire rope 3.

Example 10:

the invention also provides an elevator hoistway door opening method, which comprises the following steps:

s1: in the closed state of the hall door 16, the key is aligned with the lock lever 15 and the lock lever 15 is rotated forward (the triangle key rotates anticlockwise, the lock lever 15 rotates clockwise when viewed from the inner side surface of the hall door in fig. 1), the lock lever 15 pulls one end of the rotary latch hook 1 through the first steel wire rope 2, so that the rotary latch hook 1 is separated from the fixed latch hook 8, meanwhile, the lock lever 15 pulls one end of the striker 4 through the second steel wire rope 3, and the striker 4 rotates anticlockwise to a state of abutting against the first limiting piece 6, and is in an unlocking state at the moment;

s2: the hoistway door 16 is manually pushed open while the unlocking state is maintained, in the process, the rotating lock hook 1 is separated from the fixed lock hook 8, and in the process of horizontally moving the striker 4, the striker 4 impacts the striker wheel 10 of the travel limit switch 9, so that the gap of pushing the hoistway door 16 is limited, and the travel limit switch 9 is electrically connected with the hoistway lighting control circuit, and meanwhile, the hoistway lighting control circuit is triggered, so that hoistway lighting is started, and the position of a car is conveniently observed from the gap;

s3: if the elevator car is parked at a proper position, the hoistway door 16 is closed for a certain distance, and the fixed latch hook 8 and the rotary latch hook 1 are required to be snapped to a depth of 7mm by the national standard GB/T7588.1-2020, so that the rotary latch hook 1 and the fixed latch hook 8 can be prevented from being hooked when the hoistway door 16 is closed again and the hoistway door 16 is kept at a distance of one finger, namely, the rotary latch hook 8 and the fixed latch hook are in a separated state so as to be opened again for the next hoistway door 16;

s4: then, the lock lever 15 is reversely rotated or the key is taken out (the triangular key is rotated clockwise, the lock lever 15 is rotated anticlockwise when being observed from the inner side surface of the hall door in fig. 1), so that the first steel wire rope 2 and the second steel wire rope 3 are loosened, the rotating lock hook 1 falls down under the action of the downward-pressing spring 18, the striker 4 rotates clockwise until being abutted with the second limiting piece 7 under the action of the torsion spring 17, and the moving path of the striker 4 completely avoids the striker wheel 10 of the travel limit switch 9 and the hall door 16 is completely opened because the rotating lock hook 1 and the fixed lock hook 8 are in a disengaged state, and therefore, in the process of pushing the hall door 16, the striker 4 moves horizontally along with the hall door 16.

The technical scheme can prevent personnel falling accidents caused by irregular use of the elevator hoistway door triangular key, and plays a role in warning personnel falling in hardware technology.

Finally, it should be noted that: the above is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. An elevator hoistway door warning device that opens door, its characterized in that: the lock comprises a rotary lock hook, a first steel wire rope, a second steel wire rope, a collision rod and a travel limiting piece, wherein one end of the rotary lock hook is connected with a lock rod of a hall door lock through the first steel wire rope, and one end of the collision rod is connected with the lock rod of the hall door lock through the second steel wire rope;

the driving door hanging plate is respectively provided with a first limiting piece and a second limiting piece, the first limiting piece is used for limiting the counterclockwise rotation limit position of the collision rod, and the second limiting piece is used for limiting the clockwise rotation limit position of the collision rod;

when the collision rod is abutted with the first limiting piece and the collision rod moves horizontally, the rotating lock hook is separated from the fixed lock hook, and the collision rod collides with the travel limiting piece to limit a gap which can be opened by the hoistway door;

when the collision rod is abutted with the second limiting piece, the moving path of the collision rod completely avoids the travel limiting piece in the horizontal moving process of the collision rod.

2. The hoistway door opening warning device of claim 1, wherein: the travel limiting piece is a travel limiting switch, and when the collision rod is abutted with the first limiting piece and in the horizontal movement process of the collision rod, the collision rod collides with a collision wheel of the travel limiting switch, and the travel limiting switch is electrically connected with a well illumination control circuit.

3. The hoistway door opening warning device of claim 1, wherein: including last bank frame and track, go up bank frame and track fixed connection, fixed latch hook is fixed on last bank frame, rotate latch hook swivelling joint on initiative door link plate and rotate and be equipped with down the spring between latch hook and the initiative door link plate, initiative door link plate moves along track horizontal migration, stroke locating part fixed mounting is on last bank frame.

4. The hoistway door opening warning device of claim 1, wherein: the device further comprises a first guide piece and a second guide piece, wherein the first steel wire rope penetrates through two ends of the first guide piece to be respectively connected with one end of the rotary lock hook and the lock rod, and the second steel wire rope penetrates through two ends of the second guide piece to be respectively connected with one end of the collision rod and the lock rod.

5. The hoistway door opening warning device of claim 4, wherein: the first guide member and the second guide member are fixedly disposed on the hoistway door.

6. The hoistway door opening warning device of claim 1, wherein: the first limiting piece and the second limiting piece are both positioned below the striker, and the first limiting piece is positioned below the second limiting piece.

7. The hoistway door opening warning device of claim 6, wherein: the first limiting piece is located on the left side of the second limiting piece, the travel limiting piece is located on the right side of the striker, and the travel limiting piece is located above the second limiting piece.

8. The hoistway door opening warning device of claim 1, wherein: the first limiting piece and the second limiting piece are limiting columns or limiting blocks.

9. The hoistway door opening warning device of claim 1, wherein: one end of the collision rod, which is close to the first limiting piece, is connected with the second steel wire rope.

10. A hoistway door opening method, comprising the steps of:

s1: aligning the key with the lock rod, rotating the lock rod forward, separating the rotating lock hook from the fixed lock hook, and rotating the striker counterclockwise to a state of abutting against the first limiting piece, wherein the striker is in an unlocking state;

s2: the hoistway lighting control circuit is triggered to start the hoistway lighting;

s3: if the elevator car stops at a proper position, closing the hoistway door for a certain distance and ensuring that the rotating lock hook is separated from the fixed lock hook;

s4: and then reversely rotating the lock rod or taking out the key, pushing the hoistway door, wherein the striker completely avoids the striker wheel of the travel limit switch along with the moving path of the striker in the horizontal moving process of the hoistway door, and the hoistway door is completely opened.

Images